'hold' and 'unhold' event listener are not triggered for the remotes hold/unhold events

[Lilleri]

the event listener 'hold' is never fired if the remote peer has put on hold the local user, the events is never received only works for the local hold, neither the 'unhold' listen event works for the remote peer event.

[ibc]

Probably the remote is not putting the call on hold but just muting his mic, so not a bug because this has worked fine during years.