add the concept of a dedicated remote audio element used for playing back audio-only streams (i.e. voice calls, and the voice stream that accompanies a screenshare).  Correctly tidy up screen capture calls.
add the concept of a dedicated remote audio element used for playing back audio-only streams (i.e. voice calls, and the voice stream that accompanies a screenshare).  Correctly tidy up screen capture calls.

williamboman/matrix-js-sdk,williamboman/matrix-js-sdk,krombel/matrix-js-sdk,williamboman/matrix-js-sdk,matrix-org/matrix-js-sdk,matrix-org/matrix-js-sdk,krombel/matrix-js-sdk,krombel/matrix-js-sdk,matrix-org/matrix-js-sdk,matrix-org/matrix-js-sdk