fix: first audio join in breakout fails with specific config

When listenOnlyMode=false, skipCheck=true and skipCheckOnJoin=true, the
audio tries to start a session more than one time, causing it to fail
at the first one (and reconnect after that).

Now we check if user is already connecting before trying to start a new
audio session.

Added some info in settings.yml for the options related to this commit
Closes #12190