If your app uses the swipe-up-from-bottom gesture, turn on edge protect with
preferredScreenEdgesDeferringSystemGestures(): the user must swipe up twice to access the home indicator.
If your app includes passive viewing experiences, turn on auto-hiding with
prefersHomeIndicatorAutoHidden(): the home indicator fades out if the user hasn’t touched the screen for a few seconds, and reappears when the user touches the screen.