audio settings and message notification sound

[FabriceIRANKUNDA]

Summary

A summary of changes being made in this PR
Removed new message dot when no new message
Added alert notification sound
Improved UI

References

closes #insert number here

Checklist

• CI/CD checks pass npm run check
  • Linter passing via npm run lint
  • Typescript passing via npm run check-errors
  • Unit & Integration tests passing via npm run test
  • Docker build process passing via npm run build-client
• If this PR is still a WIP, convert to a draft
• When this PR is ready, mark it as "Ready for review"
• Changes have been manually QA'd
• Changes reviewed by at least 2 approved reviewers

QA Steps

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Reviewers

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