New alert about unavailability of audio channels in Express client

Prior to this release, if a user wanted to speak in a Cornerstone Classroom session and if no audio channels were available, then the Cornerstone Classroom Express client did not indicate about the unavailability of audio channels. As a result, the user's voice could not be heard by others in the session.

In this release, if no audio channels are available when a user wants to speak in a Cornerstone Classroom session, then the Cornerstone Classroom Express client displays the following message to that user indicating the unavailability of audio channels:

All the available audio channels are in use. Please use the Raise Hand or the text chat option to request other speakers to deselect their mic, if not in use.

This allows users to know when the max capacity of audio channels is reached and no audio channels are available for them to speak in a Cornerstone Classroom session.

Only when one or more of the remaining participants deselect their microphone, and if the maximum number of audio channels for the session has not reached, then the user's voice can be audible to others.