[BUG] 字体被强制改回微软雅黑

Before you report

• I have searched existing issues to avoid duplicates
• I have tried with the latest available version (or can reproduce on latest)

Current vs. Expected behavior

我更改了浏览器的默认字体，但翻译网页后字体会被强制改为微软雅黑

To Reproduce

1. 更改浏览器字体
2. 翻译网页
3. 字体变为微软雅黑

Which area(s) are affected? (Select all that apply)

Browser Extension

Extension version (if applicable)

No response

Provide environment information

- OS: Windows 25H2
- Browser: Firefox 153.0.1

Additional context

No response