Add throwOnFail to groupCall.setScreensharingEnabled#2787

dbkr merged 2 commits intorobertlong/group-callmatrix-org/matrix-js-sdk:robertlong/group-callfrom

dbkr/fixec_screenshare_differentnamematrix-org/matrix-js-sdk:dbkr/fixec_screenshare_differentnameCopy head branch name to clipboard