A server-muted/server-deafened bot can't reliably receive/record members' audio
(and definitely can't receive video/screen share). After the voice connection
is Ready, force a REST guild-members PATCH (mute:false, deaf:false) on the self
member so the bot is auto-unmuted & undeafened on every join/reconnect.
Requires MUTE_MEMBERS + DEAFEN_MEMBERS permissions (user granted). Failure is
logged as a warning and never breaks the voice join.