修复打包脚本在build aot dlls时可能会报错的问题

Unity/Assets/Scripts/Editor/BuildEditor/BuildEditor.cs

@@ -229,6 +229,7 @@ namespace ET
                 File.Delete(file);
                 Debug.Log($"delete dll {file}");
             }
+            AssetDatabase.Refresh();
         }
 
         private static void CopyHotfixdllToHybridDir()