[Bug]: 检查更新弹窗界面闪烁

[Higurashi-kagome]

Area

Desktop app

Platform

Windows x64

Version

0.5.4

What happened?

QQ20260507-115233.mp4

What did you expect?

检查更新，有新版本时，弹出提示有新版本可用的窗口，现在的情况是不停闪烁。

Steps to reproduce

1. 进入设置，点击检查更新
2. 界面会出现闪烁，无法正常显示新版本

Logs, screenshots, or extra context

Before submitting

• I searched existing issues and did not find an obvious duplicate.
• I can still reproduce this on the latest available build for my channel.

[legeling]

收到，已感知到此问题，可以先手动下载新版本更新，后续版本中优化