Don't fail if the requested audio output isn't available
Don't fail if the requested audio output isn't available

This thorws an exception if the requested device isn't available,
in which case we should catch it  & carry on with the default device.

Fixes https://github.com/vector-im/element-web/issues/15019

matrix-org/matrix-js-sdk,matrix-org/matrix-js-sdk,matrix-org/matrix-js-sdk,matrix-org/matrix-js-sdk