Rotate landscape display before testing cutouts.

Current cutout logic assumes the cutout is located on a short edge of
the display so if the display it tests on happens to be a landscape
display the test just fails.

Bug: 145836235
Test: atest DisplayContentTests#testDisplayCutout_rot90 on a landscape
display device.

Change-Id: I4972fbcc4aef6b9d0ba7759c8c8aa32e82a83b8b