Use a dimensions detecting root component. The Dimensions module does not
measure the app's view size, but the Window, which may not be the same, for
example on iOS when PiP is used.
Also refactor the aspect ratio wrap component since it can be taken directly
from the store.
Last, remove the use of DimensionsDetector on LargeVideo and TileView since they
occupy the full-screen anyway.
Fixes PiP mode on iOS.
d740752522