[Bug] 字幕角标无法添加到替换过的封面图

[aiwandexiong]

Verify steps

• [x] Is this something you can debug and fix? Send a pull request! Bug fixes and documentation fixes are welcome.
• [x] I have read the Wiki, especially the FAQ page.
• [x] I have searched on the issue tracker for a related issue.

MetaTube Plugin Version

2025.410.110.0

MetaTube Server Version

v1.3.1

What OS are you seeing the problem on?

No response

Description

把错误的封面图替换后，点Organize Metadata没效果，把影片刷新覆盖元数据后，换好封面，点Organize Metadata，会自动换回错误的默认封面再加上字幕角标

MetaTube Server

No response

Jellyfin/Emby Logs

No response

MetaTube Server Logs

No response

How to Reproduce

No response