…y#710

The first attempt to go full screen just after checking if `autoPlay` is on fails and prevents the second want to be done.

On some devices, the `VideoPlayerController` can be ready before the `Chewie` widget is.
If that happens, the `enterFullScreen()` call does not work and the controller is out of sync believing it’s in full screen where it’s not.

Fix attempt : We wait until we have at least one listener before trying to enter full screen