ref(large-video): combine selectParticipant logic from web (#3266)

* ref(large-video): combine selectParticipant logic from web

Currently native/middleware/redux has its own logic for selecting a participant
on the bridge. To have the logic web respect that logic, a few changes are
needed.
- Web no longer has its own call to selectParticipant.
- To keep in line with web logic selectParticipant action should act even when
  there is no track. This makes it so that when a participant does get a track
  that the bridge will send high quality. The bridge can already handle when the
  selected participant does not have a video track.
- The timing of web is such that on joining an existing conference, a
  participant joins and the participant's tracks get updated and then the
  conference is joined. The result is selectParticipant does not get fired
  because it no-ops when there is no conference. To avoid having to make
  uncertain changes (to be lazy), update the selected participant on conference
  join as well.

* squash: update comment, pass message to error handler

modules/UI/videolayout/VideoLayout.js

@@ -960,7 +960,7 @@ const VideoLayout = {
             // FIXME video type is not the same thing as container type
 
             if (id !== currentId && videoType === VIDEO_CONTAINER_TYPE) {
-                eventEmitter.emit(UIEvents.SELECTED_ENDPOINT, id);
+                APP.API.notifyOnStageParticipantChanged(id);
             }
 
             let oldSmallVideo;