fix: refactor init.js

[Antreesy]

☑️ Resolves

• Refactor init.js
  • Potentially solve issue with circular import (caused by plain import 'init.js')
  • Improve readability and concurrent calls
• Extract EventBus.on listeners
  • Call in place, when app is mounted, and stores are ready
  • Unregister with app unmount

AI (if applicable)

• The content of this PR was partly or fully generated using AI

🖌️ UI Checklist

🏁 Checklist

• 🌏 Tested with different browsers / clients:
  • Chromium (Chrome / Edge / Opera / Brave)
  • Firefox
  • Safari
  • Talk Desktop
  • Integrations with Files sidebar and other apps
  • Not risky to browser differences / client
• 🖌️ Design was reviewed, approved or inspired by the design team
• ⛑️ Tests are included or not possible
• 📗 User documentation in https://github.com/nextcloud/documentation/tree/master/user_manual/talk has been updated or is not required

[ShGKme]

The name useRegisterGlobalEvents says use "Register GlobalEvents" but it doesn't provide the registrator nor is it about all the global events handling.

It seems like it semantically does two different things, and only is having setting some EventBus.on in common:

1. The token sync on signaling-join-room
   • Seems like it can be a part of the tokenStore
2. The current joint conversation recording status sync
   • It depends on the current token and doesn't make sense as a global handler, IMO
   • I'd move it close to the conversation component (it doesn't make sense outside the conversation)
   • Or, if you want to split to a composable, I'd name it something like useRecordingStatusSync

[Antreesy]

1. Seems like it can be a part of the tokenStore

Right

2. I'd move it close to the conversation component

I will keep it separately, there is no single shared component, that appear in every integration and main app