fix(资源更新): 使用GetPackageName方法获取包名

修复调用AssetFoundUpdateFilesEventArgs.Create时传递包名参数的问题，将直接访问PackageName属性改为调用GetPackageName()方法，以确保正确获取包名信息。

Author: AlianBlank

Assets/Scripts/Framework/Procedure/PatchUpdater/ProcedureCreateDownloader.cs

@@ -39,7 +39,7 @@ void CreateDownloader(IFsm<IProcedureManager> procedureOwner)
                 // 发现新更新文件后，挂起流程系统
                 int totalDownloadCount = downloader.TotalDownloadCount;
                 long totalDownloadBytes = downloader.TotalDownloadBytes;
-                GameApp.Event.Fire(this, AssetFoundUpdateFilesEventArgs.Create(downloader.PackageName, totalDownloadCount, totalDownloadBytes));
+                GameApp.Event.Fire(this, AssetFoundUpdateFilesEventArgs.Create(downloader.GetPackageName(), totalDownloadCount, totalDownloadBytes));
                 ChangeState<ProcedureDownloadWebFiles>(procedureOwner);
             }
         }