Revert: 4c59dfb6, move DoPaletteAnimations back into GameLoop

Race fix to follow

src/openttd.cpp

@@ -94,6 +94,7 @@
 
 void CallLandscapeTick();
 void IncreaseDate();
+void DoPaletteAnimations();
 void MusicLoop();
 void ResetMusic();
 void CallWindowGameTickEvent();
@@ -1970,6 +1971,8 @@ void GameLoop()
 		StateGameLoop();
 	}
 
+	if (!_pause_mode && HasBit(_display_opt, DO_FULL_ANIMATION)) DoPaletteAnimations();
+
 	SoundDriver::GetInstance()->MainLoop();
 	MusicLoop();
 }