[RN] Fix for creating video track when conference is ending.

react/features/base/conference/actions.js

  *
  * @param {boolean} audioOnly - True if the conference should be audio only;
  * false, otherwise.
+ * @param {boolean} ensureVideoTrack - Define if conference should ensure
+ * to create a video track.
  * @returns {{
  *     type: SET_AUDIO_ONLY,
- *     audioOnly: boolean
+ *     audioOnly: boolean,
+ *     ensureVideoTrack: boolean
  * }}
  */
-export function setAudioOnly(audioOnly: boolean) {
+export function setAudioOnly(
+        audioOnly: boolean,
+        ensureVideoTrack: boolean = false) {
     return {
         type: SET_AUDIO_ONLY,
-        audioOnly
+        audioOnly,
+        ensureVideoTrack
     };
 }
 
     return (dispatch: Dispatch<*>, getState: Function) => {
         const { audioOnly } = getState()['features/base/conference'];
 
-        return dispatch(setAudioOnly(!audioOnly));
+        return dispatch(setAudioOnly(!audioOnly, true));
     };
 }

react/features/base/conference/middleware.js

         setVideoMuted(
             newValue,
             VIDEO_MUTISM_AUTHORITY.AUDIO_ONLY,
-            /* ensureTrack */ true));
+            action.ensureVideoTrack));
 
     if (typeof APP !== 'undefined') {
         // TODO This should be a temporary solution that lasts only until video

react/features/base/media/middleware.js

     sendAnalytics(createStartAudioOnlyEvent(audioOnly));
     logger.log(`Start audio only set to ${audioOnly.toString()}`);
 
-    dispatch(setAudioOnly(audioOnly));
+    dispatch(setAudioOnly(audioOnly, false));
 
     return next(action);
 }

react/features/base/settings/middleware.js

         { dispatch },
         { settings: { startAudioOnly } }) {
     if (typeof startAudioOnly === 'boolean') {
-        dispatch(setAudioOnly(startAudioOnly));
+        dispatch(setAudioOnly(startAudioOnly, true));
     }
 }