feat: add no_sound icon for videos without an audio track

[aricodeine]

Type of change(s)

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

What changed and why

• Added no_sound icon to use for videos without an audio track

Tests performed

• Tested on API 36.0 emulator

Preview

Closes the following issue(s)

• Closes Gray Out Audio Icon (Mute Button) When Video Contains No Sound #876

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).
• I have self-reviewed my pull request (no typos, formatting errors, etc.).
• All checks are passing.

[aricodeine]

@naveensingh done with the changes, I didn't know if the new string property should be in strings.xml, can move it if needed.

[naveensingh]

Looks good now, thanks!