Set child mute status on the frontend

[SteveMicroNova]

We currently await the next api call to make all child mute icons toggle when a parent mute is set, we should set that mute status locally rather than waiting for the next get request to help avoid the illusion of lag

[SteveMicroNova]

If you want something a little more open ended, this also needs to be done for basically every state-changing transaction more or less

Whenever you change state, assume that the state changed and manually update it rather than waiting for the next /api call. Search around for cases where this comes up, both in the frontend and in the home assistant plugin