fix: rename notification channels (#196)

[Aga-C]

Type of change(s)

• Bug fix
• Feature / enhancement
• Infrastructure / tooling (CI, build, deps, tests)
• Documentation

What changed and why

• Renamed notification channels to not use hardcoded names.
• As both channels can be used for 5 different things, I've set a very generic names. Let me know if you'd prefer different names.

Before & after preview

Closes the following issue(s)

• Closes Notification channel has no name #196

Checklist

• I read the contribution guidelines.
• I manually tested my changes on device/emulator (if applicable).
• I updated the "Unreleased" section in CHANGELOG.md (if applicable).
• All checks are passing.

[naveensingh]

Working on weekends? HR will be pissed.

Thanks.