[BUG] Hang while uninstalling plugins with a stuck backend

[AAGaming00]

Please confirm

• [X] I have searched existing issues
• [X] This issue is not a duplicate of an existing one
• [X] I have checked the common issues section in the readme file
• [X] I have attached logs to this bug report (failure to include logs will mean your issue may not be responded to).

Bug Report Description

Uninstalling stuck plugins hangs

This can be reproduced with AutoFlatpaks in my experience

Expected Behaviour

Uninstalling a plugin that is stuck in a loop sends SIGTERM after 10s and SIGKILL after 20s

SteamOS version

SteamOS 3.6.8 Preview

Selected Update Channel

Prerelease

Have you modified the read-only filesystem at any point?

No response

Backend Logs

Jul 04 01:57:50 neptunia PluginLoader[7862]: [browser][INFO]: uninstalling AutoFlatpaks
Jul 04 01:57:50 neptunia PluginLoader[7862]: [browser][INFO]:  at dir /home/deck/homebrew/plugins/decky-autoflatpaks
Jul 04 01:57:50 neptunia PluginLoader[7862]: [browser][DEBUG]: calling frontend unload for AutoFlatpaks
Jul 04 01:57:50 neptunia PluginLoader[7862]: [wsrouter][DEBUG]: Firing frontend event loader/unload_plugin with args ('AutoFlatpaks',)
Jul 04 01:57:50 neptunia PluginLoader[7862]: [browser][DEBUG]: Plugin AutoFlatpaks was found
Jul 04 01:57:50 neptunia PluginLoader[7862]: [plugin][INFO]: Stopping plugin AutoFlatpaks

Frontend Logs

irrelevant, this is a backend issue

[AAGaming00]

Might be fixed in the latest prerelease? needs more testing