iOS13 source selection
In iOS13 (iPhone) button for source selection is not available. Instead switches are shown as grouped  accessories with breaks the 'Main TV' tile.

On iOS12 (iPad) everything works great.

![IMG_91D127B5B153-1](https://user-images.githubusercontent.com/23139507/65546742-65b3c480-df18-11e9-8913-d7ba74b89e0d.jpeg)

![IMG_1A43F233EF10-1](https://user-images.githubusercontent.com/23139507/65546780-76643a80-df18-11e9-9552-a5dcffd980eb.jpeg)
