Change the "ADD" in the MUTE section to MUTE & UNMUTE

@ahmadmanga has a good idea.

- Instead of having a button that says "ADD" to the MUTE list..

The button they click on to Mute should say "MUTE".. and the button they click on to UNMUTE should at "UNMUTE"

This will make it clearer: https://d.buzz/#/@chrisrice/c/re-j1edrx1gwitu0zx6g8d96d

Start by locating the frontend MUTE section and its controls; the issue does not name a file, test, or entry point. Verify how the current ADD and reverse-action labels are rendered, then confirm the mute control reads MUTE and the unmute control reads UNMUTE in the interface.

Written by the indexing model from the issue text.