Add Decky branch switcher and updater to error boundary

[marios8543]

Please tick as appropriate:

• [ ] I have tested this code on a steam deck or on a PC
• [ ] My changes generate no new errors/warnings
• [ ] This is a bugfix/hotfix
• [ ] This is a new feature

If you're wanting to update a translation or add a new one, please use the weblate page: https://weblate.werwolv.net/projects/decky/

Description

This fixes issue: #

Please provide a clear and concise description of what the new feature is. If appropriate, include screenshots or videos.

[TrainDoctor]

@marios8543 this is good for now but you told me that these changes will not occur when an error occurs in a plugin and that needs to be changed to all errors encountered.