Clean up some clang-tidy errors

.clang-tidy

@@ -11,6 +11,8 @@ Checks: >
   readability-*,
   -bugprone-branch-clone,
   -bugprone-easily-swappable-parameters,
+  -bugprone-multi-level-implicit-pointer-conversion,
+  -bugprone-unchecked-optional-access,
   -cppcoreguidelines-avoid-c-arrays,
   -cppcoreguidelines-avoid-magic-numbers,
   -cppcoreguidelines-avoid-non-const-global-variables,
@@ -21,6 +23,7 @@ Checks: >
   -cppcoreguidelines-pro-type-cstyle-cast,
   -cppcoreguidelines-pro-type-union-access,
   -cppcoreguidelines-special-member-functions,
+  -misc-include-cleaner,
   -misc-non-private-member-variables-in-classes,
   -modernize-avoid-c-arrays,
   -modernize-use-trailing-return-type,

imgui-SFML.cpp

@@ -387,7 +387,7 @@ void ProcessEvent(const sf::Window& window, const sf::Event& event)
         else if (const auto* textEntered = event.getIf<sf::Event::TextEntered>())
         {
             // Don't handle the event for unprintable characters
-            if (!(textEntered->unicode < ' ' || textEntered->unicode == 127))
+            if (textEntered->unicode >= ' ' && textEntered->unicode != 127)
                 io.AddInputCharacter(textEntered->unicode);
         }
         else if (const auto* joystickConnected = event.getIf<sf::Event::JoystickConnected>())