Crash when calling MapboxMap#query when activity is restarted

[tobrun]

Follow up issue from downstream nav integration in mapbox/mapbox-navigation-android#1865. When backgrounding the app, bringing back forward and having the following Activity#onStart:

  @Override
  protected void onStart() {
    super.onStart();
    mapView.onStart();
    if (mapboxMap != null) {
      mapboxMap.queryRenderedFeatures(new PointF(0, 0));
    }
  }

This issue originates from destroying the renderer as part of backgrounding the app. When restarted the renderer hasn't been fully recreated yet.

cc @Guardiola31337