refactor: Improved & Fixed Issues with Transforms with Parents

Engine.Core/GameManager.cs

@@ -140,6 +140,9 @@ public class GameManager : BaseEntity, IGameManager
         gameObject.OnFinalized += OnGameObjectFinalize;
         gameObject.OnExitedHierarchy += OnGameObjectExitedHierarchy;
 
+        foreach (ITransform child in gameObject.Transform.Children)
+            Register(child.GameObject);
+
         if (!gameObject.Initialize())
             throw new Exception($"{nameof(gameObject)} can't be initialized");
 
@@ -161,6 +164,9 @@ public class GameManager : BaseEntity, IGameManager
         gameObject.OnFinalized -= OnGameObjectFinalize;
         gameObject.OnExitedHierarchy -= OnGameObjectExitedHierarchy;
 
+        foreach (ITransform child in gameObject.Transform.Children)
+            Unregister(child.GameObject);
+
         _gameObjects.Remove(gameObject);
         _hierarchyObjects.Remove(gameObject);