message: Copy over disablement of media streams after permissions requested
  Fixes
diff: @@ -40,7 +40,13 @@ export default class VoiceSettingsTab extends React.Component {
  this._refreshMediaDevices();
  }
  - _refreshMediaDevices = async () => {
  + _refreshMediaDevices = async (stream) => {
  + if (stream) {
  + // kill stream so that we don't leave it lingering around with webcam enabled etc
  + // as here we called gUM to ask user for permission to their device names only
  + stream.getTracks().forEach((track) => track.stop());
  + }
  +
  this.setState({
  mediaDevices: await CallMediaHandler.getDevices(),
  activeAudioOutput: CallMediaHandler.getAudioOutput(),
  