Fix undefined behavior with type of WindowMan::HandleWindowExposedEvent

Undefined sanitizer's complaint:

../external/sources/SDL3-3.2.10/src/events/SDL_eventwatch.c:72:17: runtime error: call to function RTE::WindowMan::HandleWindowExposedEvent(void*, SDL_Event*) through pointer to incorrect function type 'bool (*)(void *, union SDL_Event *)'
/media/ext_hdd/nobackup/architector4/Downloads/Cortex-Command-Community-Project/builddebug/../Source/Managers/WindowMan.cpp:678: note: RTE::WindowMan::HandleWindowExposedEvent(void*, SDL_Event*) defined here
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior ../external/sources/SDL3-3.2.10/src/events/SDL_eventwatch.c:72:17

Author: Architector4

Source/Managers/WindowMan.cpp

@@ -675,12 +675,14 @@ void WindowMan::DisplaySwitchOut() const {
 	SDL_SetCursor(nullptr);
 }
 
-void WindowMan::HandleWindowExposedEvent(void *userdata, SDL_Event *event) {
+bool WindowMan::HandleWindowExposedEvent(void *userdata, SDL_Event *event) {
 	if (event->type == SDL_EVENT_WINDOW_EXPOSED) {
 		g_WindowMan.SetViewportLetterboxed();
 		g_WindowMan.ClearBackbuffer(false);
 		g_WindowMan.UploadFrame();
 	}
+
+	return true;
 }
 
 void WindowMan::QueueWindowEvent(const SDL_Event& windowEvent) {

Source/Managers/WindowMan.h

@@ -168,8 +168,8 @@ namespace RTE {
 #pragma endregion
 
 #pragma region Concrete Methods
-		/// SDL_EventFilter to hadnle window exposed events for live resize.
-		static void HandleWindowExposedEvent(void* userdata, SDL_Event* event);
+		/// SDL_EventFilter to handle window exposed events for live resize.
+		static bool HandleWindowExposedEvent(void* userdata, SDL_Event* event);
 
 		/// Adds an SDL_Event to the Event queue for processing on Update.
 		/// @param windowEvent The SDL window event to queue.