Fix issue with media controller lifecycle.

We were connecting and disconnecting in onStart and onStop,
which can get called in different orders depending on what the
system does. This results in sometimes trying to connect to an
already connected media session.

app/src/main/java/org/thoughtcrime/securesms/components/voice/VoiceNoteMediaController.java

@@ -105,19 +105,16 @@ public class VoiceNoteMediaController implements DefaultLifecycleObserver {
   }
 
   @Override
-  public void onStart(@NonNull LifecycleOwner owner) {
+  public void onResume(@NonNull LifecycleOwner owner) {
     if (!mediaBrowser.isConnected()) {
       mediaBrowser.connect();
     }
-  }
 
-  @Override
-  public void onResume(@NonNull LifecycleOwner owner) {
     activity.setVolumeControlStream(AudioManager.STREAM_MUSIC);
   }
 
   @Override
-  public void onStop(@NonNull LifecycleOwner owner) {
+  public void onPause(@NonNull LifecycleOwner owner) {
     clearProgressEventHandler();
 
     if (MediaControllerCompat.getMediaController(activity) != null) {