VSCode Flatpak lost access to fonts

Happened after an update yesterday. The font was installed only in the system, not in user `~/.fonts`. It has ligatures, and it is enabled in `settings.json`.

Before an update, system fonts were working in a Flatpak. With ligatures and everything.

Now even when I try adding an override for filesystem to `/usr/share/fonts:ro` or `/run/host/fonts:ro`, the app refuses to open because it freezes on startup.

Do you know why that could've happened?

首先使用仅限系统的字体重现该问题，并比较更新前后的启动行为。检查 `/usr/share/fonts:ro` 或 `/run/host/fonts:ro` 覆盖项是否导致冻结；当系统字体可以在 VS Code 中以连字方式使用且应用能够正常启动时，即表示完成。

由索引模型根据 Issue 内容生成。