This PR removes the actions `collab::ToggleScreenSharing`,
`collab::ToggleMute`, and `collab::ToggleDeafen`. They weren't actually
registered to any behavior, so while it was possible to create a keybind
bound to them, they never actually trigger. I spent ~30 minutes trying
to figure out why I was getting this result for my `"f13":
"collab::ToggleMute"` keybind in the keybind context menu:
<img width="485" height="174" alt="image"
src="https://github.com/user-attachments/assets/23064c8f-fe8d-42e5-b94f-bd4b8a0cb3b5"
/>
(This really threw me for a loop because I was trying to use this as a
known good case to compare against a _different_ action that wasn't
working because I forgot to register it.)
As a side benefit, this enables telemetry for toggling mic mute via
keybind.
Release Notes:
- Fixed telemetry for `collab::Mute`
- Removed unregistered actions `collab::ToggleMute`,
`collab::ToggleDeafen`, and `collab::ToggleScreenshare`
- The correctly-functioning actions `collab::Mute`, `collab::Deafen`,
and `collab::ScreenShare` are recommended instead