Creating composable for connection monitoring and replacing existing logic with it

[nathanaelg16]

Summary

This change creates a new composable for connection monitoring and migrates existing logic to use the new composable.

References

• Fixes Create composable for connection monitoring and replace existing logic with it #12205

Testing checklist

• Contributor has fully tested the PR manually
• If there are any front-end changes, before/after screenshots are included
• Critical user journeys are covered by Gherkin stories
• Critical and brittle code paths are covered by unit tests

PR process

• PR has the correct target branch and milestone
• PR has 'needs review' or 'work-in-progress' label
• If PR is ready for review, a reviewer has been added. (Don't use 'Assignees')
• If this is an important user-facing change, PR or related issue has a 'changelog' label
• If this includes an internal dependency change, a link to the diff is provided

Reviewer checklist

• PR is fully functional
• PR has been tested for accessibility regressions
• External dependency files were updated if necessary (yarn and pip)
• Documentation is updated
• Contributor is in AUTHORS.md

[github-actions]

Build Artifacts

Asset type	Download link
PEX file	kolibri-0.17.0a0.dev0_git.101.g7a948304.pex
Windows Installer (EXE)	kolibri-0.17.0a0.dev0+git.101.g7a948304-windows-setup-unsigned.exe
Debian Package	kolibri_0.17.0a0.dev0+git.101.g7a948304-0ubuntu1_all.deb
Mac Installer (DMG)	kolibri-0.17.0a0.dev0+git.101.g7a948304.dmg
Android Package (APK)	kolibri-0.17.0a0.dev0+git.101.g7a948304-0.1.4-debug.apk
TAR file	kolibri-0.17.0a0.dev0+git.101.g7a948304.tar.gz
WHL file	kolibri-0.17.0a0.dev0+git.101.g7a948304-py2.py3-none-any.whl

[rtibbles]

This looks like the correct approach, and the tests have been nicely updated to handle the new code. One small piece of cleanup, and I'll do some manual testing and closer review soon!

[rtibbles]

Code changes look good, manual testing checks out. Snackbar properly displays in disconnected state, reconnect time does appropriate back off behaviour, and reconnection happens as intended.

[rtibbles]

Excellent work @nathanaelg16, very cleanly and neatly done!