Reset follower NPC disposition/faction on player death

[ghost]

Summary

SUMMARY: Bugfixes "Reset follower NPC disposition/faction on player death"

Purpose of change

Fixes #28113

Describe the solution

When player dies, all NPC followers have their disposition and mission for talk topics, and faction and attitude reset to a somewhat blank slate ( like a dynamic NPC - but with no chance of hostility, incase new player in same world spawns in same refugee centre as previous )
Follower list will be cleared, and if you meet the same NPC in the same world with a new player, they will need to be recruited again.

To facilitate this, I have made two small chagnes to the mechanics of NPCs - one - their disposition is set when starting dialogue, ( normally NPCS have disposition set to player when spawned - these NPCS arent being spawned and the player has changed. )

Also , I have added NPCs you recruit to the players faction, and removed when player dies, this will have beneficial knock-on effects to further work on factions in general.

Describe alternatives you've considered

N/A

Additional context

N/A