Cannot download documentation offline

# Bug report

When trying to download documentation for offline use, it will just jump to `error`. After flushing the browser caches it's also causing dynamic pages to not load anymore, which breaks the app.

## OS information

MacOS Ventura (13.0.1), Firefox 108.0.1

## Steps to reproduce

Go to https://devdocs.io/offline and try to install docs.

Note that in Chrome I cannot reproduce this issue, it might be isolated to Firefox.

## More resources



## Possible fix

从 https://devdocs.io/offline 开始，在 macOS Ventura 上的 Firefox 中重现文档安装失败的问题，然后将其行为与 Chrome 进行比较。检查清除浏览器缓存是否会导致动态页面停止加载，如报告中所述。离线文档成功安装，并且动态页面在处理缓存后仍能继续加载，即表示完成。

由索引模型根据 Issue 内容生成。