fix(UI): 修复组件释放时未正确清理的问题

在关闭UI时，确保组件从父节点移除并正确释放。同时优化UIManager中组件的释放逻辑，改为使用对象池进行回收
GameFrameX/GameFrameX.Unity#36

Author: AlianBlank

Runtime/FairyGUIFormHelper.cs

@@ -135,6 +135,8 @@ public override void ReleaseUIForm(object uiFormAsset, object uiFormInstance)
         {
             if (uiFormInstance is GComponent component)
             {
+                component.RemoveFromParent();
+                component.Remove();
                 component.Dispose();
             }
         }

Runtime/UIManager.Close.cs

@@ -67,9 +67,7 @@ protected override void RecycleUIForm(IUIForm uiForm, bool isDispose = false)
 
             if (isDispose)
             {
-                component.RemoveFromParent();
-                component.Remove();
-                component.Dispose();
+                m_InstancePool.ReleaseObject(component);
             }
         }