fix(rn,breakout-rooms) create desired local tracks when joining rooms

react/features/breakout-rooms/actions.js

 } from '../base/conference';
 import { setAudioMuted, setVideoMuted } from '../base/media';
 import { getRemoteParticipants } from '../base/participants';
+import { createDesiredLocalTracks } from '../base/tracks/actions';
 import {
     NOTIFICATION_TIMEOUT_TYPE,
     clearNotifications,
             dispatch(createConference(_roomId));
             dispatch(setAudioMuted(audio.muted));
             dispatch(setVideoMuted(video.muted));
+            dispatch(createDesiredLocalTracks());
         } else {
             try {
                 await APP.conference.leaveRoom(false /* doDisconnect */);