refactor: IBehaviourController.TryGetBehaviour to Extension Method

Engine.Core/Extensions/BehaviourExtensions.cs

@@ -10,7 +10,7 @@ public static class BehaviourExtensions
     public static T? FindBehaviour<T>(this IEnumerable<IGameObject> gameObjects) where T : class
     {
         foreach (IGameObject gameObject in gameObjects)
-            if (gameObject.BehaviourController.TryGetBehaviour(out T? behaviour))
+            if (gameObject.BehaviourController.GetBehaviour<T>() is T behaviour)
                 return behaviour;
 
         return default;