ScreenDecorations: fix cutout not showing in seascape

Now that we invert the gravity in seascape and upside down,
we also need to invert which notch we draw in that window.

Change-Id: I28d892a433d47f65b227220278cbc56bbbb7e674
Fixes: 80530886
Test: Rotate phone to seascape, turn on emulated notch. verify notch overlay is drawing.