fix(): 修复重启后切换模式后相机丢失BUG，修复重启后UI绑定失效的BUG，将GameManager移动到Gameplay

Assets/Script/Core/ScenesManager.cs

@@ -41,11 +41,17 @@ namespace Core
         public void LoadGameplay(string sceneName)
         {
             StartCoroutine(SwitchGameplay(sceneName));
-            if (!isLoadGameplayUI)
+            ReLoadUIScene();
+        }
+        
+        public void ReLoadUIScene()
+        {
+            if (isLoadGameplayUI)
             {
-                StartCoroutine(LoadSceneAdditive("UIScene"));
-                isLoadGameplayUI = true;
+                StartCoroutine(UnloadScene("UIScene"));
             }
+            StartCoroutine(LoadSceneAdditive("UIScene"));
+            isLoadGameplayUI = true;
         }
 
         private IEnumerator SwitchGameplay(string newScene)