feat: 添加场景过渡类型支持，优化场景加载逻辑

Assets/_Game/Scripts/UI/Menus/PauseMenuController.cs

@@ -51,7 +51,8 @@ namespace BaseGames.UI
             _uiManager.CloseTopPanel();
             _onSceneLoadRequest?.Raise(new SceneLoadRequest
             {
-                SceneName        = "MainMenu",
+                SceneName         = "MainMenu",
+                TransitionType    = TransitionType.Scene,
                 ShowLoadingScreen = true
             });
         }