* Add nested map infrastructure

This begins the work, eventually will split this to a few files.

Also updates with region groundcovers because obviously.

* Update roadstop.json

* Update roadstop.json

* Update roadstop.json

* Update roadstop.json

* Update roadstop.json

* Update roadstop.json

* dialogue

* Update free_merchant_caravans.json

* cleanup after playtesting

* Add NPC remove script by Mylie

* astyle

* Apply suggestions from code review

Co-authored-by: Anton Burmistrov <[email protected]>

* Update NPC_free_merchant_shopkeep.json

* change recurrence type

Prevents player from forcing a respawn by constantly coming and going from the map.

* Make the pickup custom

Contents should still be adjusted a bit.

* Update factional.json

* Update NPC_free_merchant_shopkeep.json

* Update free_merchant_caravans.json

* Update randenc_caravans.json

* begin making some more simple NPCs

* Update NPC_visiting_scavenger.json

* Update NPC_visiting_scavenger.json

Adds directions to many factions, similar to the teamster.

* Update NPC_john_bailey_visitor.json

* Some of John's dialogue

* more dialogue for john

* almost done John's dialogue

probably got that arithmetic function wrong though

* Add teaching and advice

* updated johns gear (#25)

* updated johns gear

* woops deleted everything

* don't need the camel group anymore

* touch up arithmetic

* Update NPC_john_bailey_visitor.json

* Update NPC_john_bailey_visitor.json

* clear change to roadstop

* Rename data/json/npcs/refugee_center/surface_visitors/NPC_john_bailey_visitor.json to data/json/npcs/random_encounters/john_bailey.json

* Create randenc_refugee_center.json

* Update john_bailey.json

* Update john_bailey.json

* playtest fixes

* Update randenc_refugee_center.json

* Update NPC_visiting_scavenger.json

* Make john able to teach more than once

Now he'll teach a random number of times but usually 2-3

* Update john_bailey.json

Remove the random it was causing problems

Co-authored-by: Anton Burmistrov <[email protected]>
Co-authored-by: Dillon Matchett <[email protected]>

* Add missing was_loaded initialization

We forgot to initialize was_loaded in profession_group

I found this bug thanks to UndefinedBehaviorSanitizer
```c++
src/profession_group.h:8:8: runtime error: load of value 60, which is not a valid value for type 'bool'
    #0 0x6fa4312 in profession_group::profession_group(profession_group const&) src/profession_group.h:8
    CleverRaven#1 0x6fb241e in void std::__new_allocator<profession_group>::construct<profession_group, profession_group const&>(profession_group*, profession_group const&) /usr/include/c++/13/bits/new_allocator.h:187
    CleverRaven#2 0x6fb241e in void std::allocator_traits<std::allocator<profession_group> >::construct<profession_group, profession_group const&>(std::allocator<profession_group>&, profession_group*, profession_group const&) /usr/include/c++/13/bits/alloc_traits.h:537
    CleverRaven#3 0x6fb241e in void std::vector<profession_group, std::allocator<profession_group> >::_M_realloc_insert<profession_group const&>(__gnu_cxx::__normal_iterator<profession_group*, std::vector<profession_group, std::allocator<profession_group> > >, profession_group const&) /usr/include/c++/13/bits/vector.tcc:468
    CleverRaven#4 0x6fb2911 in std::vector<profession_group, std::allocator<profession_group> >::push_back(profession_group const&) /usr/include/c++/13/bits/stl_vector.h:1289
    CleverRaven#5 0x6fb2c14 in generic_factory<profession_group>::insert(profession_group const&) src/generic_factory.h:391
    CleverRaven#6 0x6fb61a7 in generic_factory<profession_group>::load(JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) src/generic_factory.h:304
    CleverRaven#7 0x6fa0efd in profession_group::load_profession_group(JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) src/profession_group.cpp:25
    CleverRaven#8 0x4294940 in void std::__invoke_impl<void, void (*&)(JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&), JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&>(std::__invoke_other, void (*&)(JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&), JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /usr/include/c++/13/bits/invoke.h:61
    CleverRaven#9 0x4294976 in std::enable_if<is_invocable_r_v<void, void (*&)(JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&), JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&>, void>::type std::__invoke_r<void, void (*&)(JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&), JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&>(void (*&)(JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&), JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /usr/include/c++/13/bits/invoke.h:111
    CleverRaven#10 0x4294976 in std::_Function_handler<void (JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&), void (*)(JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>::_M_invoke(std::_Any_data const&, JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) /usr/include/c++/13/bits/std_function.h:290
    CleverRaven#11 0x4290c79 in std::function<void (JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>::operator()(JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const /usr/include/c++/13/bits/std_function.h:591
    CleverRaven#12 0x426934f in operator() src/init.cpp:227
    CleverRaven#13 0x426934f in __invoke_impl<void, DynamicDataLoader::add(const std::string&, const std::function<void(const JsonObject&, const std::__cxx11::basic_string<char>&)>&)::<lambda(const JsonObject&, const std::string&, const cata_path&, const cata_path&)>&, const JsonObject&, const std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, const cata_path&, const cata_path&> /usr/include/c++/13/bits/invoke.h:61
    CleverRaven#14 0x426934f in __invoke_r<void, DynamicDataLoader::add(const std::string&, const std::function<void(const JsonObject&, const std::__cxx11::basic_string<char>&)>&)::<lambda(const JsonObject&, const std::string&, const cata_path&, const cata_path&)>&, const JsonObject&, const std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, const cata_path&, const cata_path&> /usr/include/c++/13/bits/invoke.h:111
    CleverRaven#15 0x426934f in _M_invoke /usr/include/c++/13/bits/std_function.h:290
    CleverRaven#16 0x42904f3 in std::function<void (JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cata_path const&, cata_path const&)>::operator()(JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cata_path const&, cata_path const&) const /usr/include/c++/13/bits/std_function.h:591
    CleverRaven#17 0x4284949 in DynamicDataLoader::load_object(JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cata_path const&, cata_path const&) src/init.cpp:137
    CleverRaven#18 0x4285c32 in DynamicDataLoader::load_all_from_json(JsonValue const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, loading_ui&, cata_path const&, cata_path const&) src/init.cpp:540
    CleverRaven#19 0x4286744 in DynamicDataLoader::load_data_from_path(cata_path const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, loading_ui&) src/init.cpp:521
    #20 0x3ca25fa in game::load_data_from_dir(cata_path const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, loading_ui&) src/game.cpp:571
    #21 0x3d21130 in game::load_packs(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::vector<string_id<MOD_INFORMATION>, std::allocator<string_id<MOD_INFORMATION> > > const&, loading_ui&) src/game.cpp:3265
    #22 0x3d518b5 in game::load_world_modfiles(loading_ui&) src/game.cpp:3235
    #23 0x3e055d0 in game::setup() src/game.cpp:756
    #24 0x5111cc3 in main_menu::new_character_tab() src/main_menu.cpp:972
    #25 0x5127aea in main_menu::opening_screen() src/main_menu.cpp:863
    #26 0x50f1e5e in main src/main.cpp:792
    #27 0x7f7a489cfb89 in __libc_start_call_main (/lib64/libc.so.6+0x27b89) (BuildId: f888be5f5e7d58e04cabb8c675c7ab94e77dd68c)
    #28 0x7f7a489cfc4a in __libc_start_main_alias_2 (/lib64/libc.so.6+0x27c4a) (BuildId: f888be5f5e7d58e04cabb8c675c7ab94e77dd68c)
    #29 0x1bec804 in _start (/home/cdda/git/Cataclysm-DDA/cataclysm-tiles+0x1bec804) (BuildId: 1a0225eb0946b150a1f9b1759d512b53fde7f1d0)
```

* Make overmap_terrain_coverage less likely to produce spurious errors

* Revert "Make overmap_terrain_coverage less likely to produce spurious errors"

This reverts commit 6134a08.

If melee_actori.is_grab is false grab.exclusive_grab and grab.respect_seatbelts
were not initialized. This was causing errors under -fsanitize=undefined

The solution initialize the booleans to value that match their defaults

```C++
src/mattack_actors.h:75:8: runtime error: load of value 190, which is not a valid value for type 'bool'
    #0 0x5a9b6fe in grab::grab(grab const&) src/mattack_actors.h:75
    CleverRaven#1 0x5ab7635 in melee_actor::melee_actor(melee_actor const&) src/mattack_actors.h:106
    CleverRaven#2 0x5ab8412 in std::__detail::_MakeUniq<melee_actor>::__single_object std::make_unique<melee_actor, melee_actor const&>(melee_actor const&) /usr/include/c++/13/bits/unique_ptr.h:1070
    CleverRaven#3 0x5a87e4c in melee_actor::clone() const src/mattack_actors.cpp:962
    CleverRaven#4 0x207632c in cata::clone_ptr<mattack_actor>::clone_ptr(cata::clone_ptr<mattack_actor> const&) src/clone_ptr.h:18
    CleverRaven#5 0x6085941 in mtype_special_attack::mtype_special_attack(mtype_special_attack const&) src/mattack_common.h:47
    CleverRaven#6 0x6085941 in std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack>::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack, true>(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&) /usr/include/c++/13/bits/stl_pair.h:559
    CleverRaven#7 0x6085a2b in void std::__new_allocator<std::_Rb_tree_node<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > >::construct<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&>(std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack>*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&) /usr/include/c++/13/bits/new_allocator.h:187
    CleverRaven#8 0x6085a2b in void std::allocator_traits<std::allocator<std::_Rb_tree_node<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > > >::construct<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&>(std::allocator<std::_Rb_tree_node<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > >&, std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack>*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&) /usr/include/c++/13/bits/alloc_traits.h:537
    CleverRaven#9 0x6085a2b in void std::_Rb_tree<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack>, std::_Select1st<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> >, std::less<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > >::_M_construct_node<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&>(std::_Rb_tree_node<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> >*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&) /usr/include/c++/13/bits/stl_tree.h:597
    CleverRaven#10 0x6085b06 in std::_Rb_tree_node<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> >* std::_Rb_tree<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack>, std::_Select1st<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> >, std::less<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > >::_M_create_node<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&>(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&) /usr/include/c++/13/bits/stl_tree.h:614
    CleverRaven#11 0x6085b71 in std::_Rb_tree<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack>, std::_Select1st<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> >, std::less<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > >::_Auto_node::_Auto_node<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&>(std::_Rb_tree<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack>, std::_Select1st<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> >, std::less<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&) /usr/include/c++/13/bits/stl_tree.h:1637
    CleverRaven#12 0x6085c9d in std::_Rb_tree_iterator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > std::_Rb_tree<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack>, std::_Select1st<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> >, std::less<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > >::_M_emplace_hint_unique<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&>(std::_Rb_tree_const_iterator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&) /usr/include/c++/13/bits/stl_tree.h:2462
    CleverRaven#13 0x608618f in std::_Rb_tree_iterator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > std::map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, mtype_special_attack, std::less<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > >::emplace_hint<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&>(std::_Rb_tree_const_iterator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&) /usr/include/c++/13/bits/stl_map.h:640
    CleverRaven#14 0x608618f in std::pair<std::_Rb_tree_iterator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> >, bool> std::map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, mtype_special_attack, std::less<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > >::emplace<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&>(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&) /usr/include/c++/13/bits/stl_map.h:601
    CleverRaven#15 0x5ff3881 in MonsterGenerator::add_attack(mtype_special_attack const&) src/monstergenerator.cpp:1312
    CleverRaven#16 0x5ffafa5 in MonsterGenerator::load_monster_attack(JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) src/monstergenerator.cpp:1376
    CleverRaven#17 0x4262e91 in operator() src/init.cpp:466
    CleverRaven#18 0x4262e91 in __invoke_impl<void, DynamicDataLoader::initialize()::<lambda(const JsonObject&, const std::string&)>&, const JsonObject&, const std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&> /usr/include/c++/13/bits/invoke.h:61
    CleverRaven#19 0x4262e91 in __invoke_r<void, DynamicDataLoader::initialize()::<lambda(const JsonObject&, const std::string&)>&, const JsonObject&, const std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&> /usr/include/c++/13/bits/invoke.h:111
    #20 0x4262e91 in _M_invoke /usr/include/c++/13/bits/std_function.h:290
    #21 0x4290ce9 in std::function<void (JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>::operator()(JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const /usr/include/c++/13/bits/std_function.h:591
    #22 0x42693bf in operator() src/init.cpp:227
    #23 0x42693bf in __invoke_impl<void, DynamicDataLoader::add(const std::string&, const std::function<void(const JsonObject&, const std::__cxx11::basic_string<char>&)>&)::<lambda(const JsonObject&, const std::string&, const cata_path&, const cata_path&)>&, const JsonObject&, const std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, const cata_path&, const cata_path&> /usr/include/c++/13/bits/invoke.h:61
    #24 0x42693bf in __invoke_r<void, DynamicDataLoader::add(const std::string&, const std::function<void(const JsonObject&, const std::__cxx11::basic_string<char>&)>&)::<lambda(const JsonObject&, const std::string&, const cata_path&, const cata_path&)>&, const JsonObject&, const std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, const cata_path&, const cata_path&> /usr/include/c++/13/bits/invoke.h:111
    #25 0x42693bf in _M_invoke /usr/include/c++/13/bits/std_function.h:290
    #26 0x4290563 in std::function<void (JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cata_path const&, cata_path const&)>::operator()(JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cata_path const&, cata_path const&) const /usr/include/c++/13/bits/std_function.h:591
    #27 0x42849b9 in DynamicDataLoader::load_object(JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cata_path const&, cata_path const&) src/init.cpp:137
    #28 0x4285ca2 in DynamicDataLoader::load_all_from_json(JsonValue const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, loading_ui&, cata_path const&, cata_path const&) src/init.cpp:540
    #29 0x42867b4 in DynamicDataLoader::load_data_from_path(cata_path const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, loading_ui&) src/init.cpp:521
    #30 0x3ca266a in game::load_data_from_dir(cata_path const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, loading_ui&) src/game.cpp:571
    #31 0x3d211a0 in game::load_packs(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::vector<string_id<MOD_INFORMATION>, std::allocator<string_id<MOD_INFORMATION> > > const&, loading_ui&) src/game.cpp:3265
    #32 0x3d51925 in game::load_world_modfiles(loading_ui&) src/game.cpp:3235
    #33 0x3e05640 in game::setup() src/game.cpp:756
    CleverRaven#34 0x5111d33 in main_menu::new_character_tab() src/main_menu.cpp:972
    CleverRaven#35 0x5127b5a in main_menu::opening_screen() src/main_menu.cpp:863
    CleverRaven#36 0x50f1ece in main src/main.cpp:792
    CleverRaven#37 0x7fdc43fa9b89 in __libc_start_call_main (/lib64/libc.so.6+0x27b89) (BuildId: f888be5f5e7d58e04cabb8c675c7ab94e77dd68c)
    CleverRaven#38 0x7fdc43fa9c4a in __libc_start_main_alias_2 (/lib64/libc.so.6+0x27c4a) (BuildId: f888be5f5e7d58e04cabb8c675c7ab94e77dd68c)
    CleverRaven#39 0x1bec874 in _start (/home/cdda/git/Cataclysm-DDA/cataclysm-tiles+0x1bec874) (BuildId: be24990d1723c8da00f3e8701793ab983cf64dcc)
```

If melee_actori.is_grab is false grab.exclusive_grab and grab.respect_seatbelts
were not initialized. This was causing errors under -fsanitize=undefined

The solution initialize the booleans to value that match their defaults

```C++
src/mattack_actors.h:75:8: runtime error: load of value 190, which is not a valid value for type 'bool'
    #0 0x5a9b6fe in grab::grab(grab const&) src/mattack_actors.h:75
    CleverRaven#1 0x5ab7635 in melee_actor::melee_actor(melee_actor const&) src/mattack_actors.h:106
    CleverRaven#2 0x5ab8412 in std::__detail::_MakeUniq<melee_actor>::__single_object std::make_unique<melee_actor, melee_actor const&>(melee_actor const&) /usr/include/c++/13/bits/unique_ptr.h:1070
    CleverRaven#3 0x5a87e4c in melee_actor::clone() const src/mattack_actors.cpp:962
    CleverRaven#4 0x207632c in cata::clone_ptr<mattack_actor>::clone_ptr(cata::clone_ptr<mattack_actor> const&) src/clone_ptr.h:18
    CleverRaven#5 0x6085941 in mtype_special_attack::mtype_special_attack(mtype_special_attack const&) src/mattack_common.h:47
    CleverRaven#6 0x6085941 in std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack>::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack, true>(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&) /usr/include/c++/13/bits/stl_pair.h:559
    CleverRaven#7 0x6085a2b in void std::__new_allocator<std::_Rb_tree_node<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > >::construct<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&>(std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack>*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&) /usr/include/c++/13/bits/new_allocator.h:187
    CleverRaven#8 0x6085a2b in void std::allocator_traits<std::allocator<std::_Rb_tree_node<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > > >::construct<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&>(std::allocator<std::_Rb_tree_node<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > >&, std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack>*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&) /usr/include/c++/13/bits/alloc_traits.h:537
    CleverRaven#9 0x6085a2b in void std::_Rb_tree<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack>, std::_Select1st<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> >, std::less<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > >::_M_construct_node<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&>(std::_Rb_tree_node<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> >*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&) /usr/include/c++/13/bits/stl_tree.h:597
    CleverRaven#10 0x6085b06 in std::_Rb_tree_node<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> >* std::_Rb_tree<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack>, std::_Select1st<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> >, std::less<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > >::_M_create_node<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&>(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&) /usr/include/c++/13/bits/stl_tree.h:614
    CleverRaven#11 0x6085b71 in std::_Rb_tree<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack>, std::_Select1st<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> >, std::less<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > >::_Auto_node::_Auto_node<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&>(std::_Rb_tree<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack>, std::_Select1st<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> >, std::less<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&) /usr/include/c++/13/bits/stl_tree.h:1637
    CleverRaven#12 0x6085c9d in std::_Rb_tree_iterator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > std::_Rb_tree<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack>, std::_Select1st<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> >, std::less<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > >::_M_emplace_hint_unique<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&>(std::_Rb_tree_const_iterator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&) /usr/include/c++/13/bits/stl_tree.h:2462
    CleverRaven#13 0x608618f in std::_Rb_tree_iterator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > std::map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, mtype_special_attack, std::less<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > >::emplace_hint<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&>(std::_Rb_tree_const_iterator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&) /usr/include/c++/13/bits/stl_map.h:640
    CleverRaven#14 0x608618f in std::pair<std::_Rb_tree_iterator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> >, bool> std::map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, mtype_special_attack, std::less<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, mtype_special_attack> > >::emplace<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&>(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, mtype_special_attack const&) /usr/include/c++/13/bits/stl_map.h:601
    CleverRaven#15 0x5ff3881 in MonsterGenerator::add_attack(mtype_special_attack const&) src/monstergenerator.cpp:1312
    CleverRaven#16 0x5ffafa5 in MonsterGenerator::load_monster_attack(JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) src/monstergenerator.cpp:1376
    CleverRaven#17 0x4262e91 in operator() src/init.cpp:466
    CleverRaven#18 0x4262e91 in __invoke_impl<void, DynamicDataLoader::initialize()::<lambda(const JsonObject&, const std::string&)>&, const JsonObject&, const std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&> /usr/include/c++/13/bits/invoke.h:61
    CleverRaven#19 0x4262e91 in __invoke_r<void, DynamicDataLoader::initialize()::<lambda(const JsonObject&, const std::string&)>&, const JsonObject&, const std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&> /usr/include/c++/13/bits/invoke.h:111
    #20 0x4262e91 in _M_invoke /usr/include/c++/13/bits/std_function.h:290
    #21 0x4290ce9 in std::function<void (JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>::operator()(JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const /usr/include/c++/13/bits/std_function.h:591
    #22 0x42693bf in operator() src/init.cpp:227
    #23 0x42693bf in __invoke_impl<void, DynamicDataLoader::add(const std::string&, const std::function<void(const JsonObject&, const std::__cxx11::basic_string<char>&)>&)::<lambda(const JsonObject&, const std::string&, const cata_path&, const cata_path&)>&, const JsonObject&, const std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, const cata_path&, const cata_path&> /usr/include/c++/13/bits/invoke.h:61
    #24 0x42693bf in __invoke_r<void, DynamicDataLoader::add(const std::string&, const std::function<void(const JsonObject&, const std::__cxx11::basic_string<char>&)>&)::<lambda(const JsonObject&, const std::string&, const cata_path&, const cata_path&)>&, const JsonObject&, const std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, const cata_path&, const cata_path&> /usr/include/c++/13/bits/invoke.h:111
    #25 0x42693bf in _M_invoke /usr/include/c++/13/bits/std_function.h:290
    #26 0x4290563 in std::function<void (JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cata_path const&, cata_path const&)>::operator()(JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cata_path const&, cata_path const&) const /usr/include/c++/13/bits/std_function.h:591
    #27 0x42849b9 in DynamicDataLoader::load_object(JsonObject const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cata_path const&, cata_path const&) src/init.cpp:137
    #28 0x4285ca2 in DynamicDataLoader::load_all_from_json(JsonValue const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, loading_ui&, cata_path const&, cata_path const&) src/init.cpp:540
    #29 0x42867b4 in DynamicDataLoader::load_data_from_path(cata_path const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, loading_ui&) src/init.cpp:521
    #30 0x3ca266a in game::load_data_from_dir(cata_path const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, loading_ui&) src/game.cpp:571
    #31 0x3d211a0 in game::load_packs(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::vector<string_id<MOD_INFORMATION>, std::allocator<string_id<MOD_INFORMATION> > > const&, loading_ui&) src/game.cpp:3265
    #32 0x3d51925 in game::load_world_modfiles(loading_ui&) src/game.cpp:3235
    #33 0x3e05640 in game::setup() src/game.cpp:756
    CleverRaven#34 0x5111d33 in main_menu::new_character_tab() src/main_menu.cpp:972
    CleverRaven#35 0x5127b5a in main_menu::opening_screen() src/main_menu.cpp:863
    CleverRaven#36 0x50f1ece in main src/main.cpp:792
    CleverRaven#37 0x7fdc43fa9b89 in __libc_start_call_main (/lib64/libc.so.6+0x27b89) (BuildId: f888be5f5e7d58e04cabb8c675c7ab94e77dd68c)
    CleverRaven#38 0x7fdc43fa9c4a in __libc_start_main_alias_2 (/lib64/libc.so.6+0x27c4a) (BuildId: f888be5f5e7d58e04cabb8c675c7ab94e77dd68c)
    CleverRaven#39 0x1bec874 in _start (/home/cdda/git/Cataclysm-DDA/cataclysm-tiles+0x1bec874) (BuildId: be24990d1723c8da00f3e8701793ab983cf64dcc)
```

Co-authored-by: hexagon-recursion <[email protected]>