Hiding all views when the notification shade is collapsed

Non-heads up views could still be visible when the shade
was collapsed. Therefore they would briefly peak out
after heads up views would be swiped away leading
to ugly flickering.

Test: add hun (with notch enabled) and swipe away hun with other views present
Change-Id: I794693d7d5af5591490df7c2f4b95c01043897d2
Fixes: 	76150837
1 file changed