Check if display allows for app header/handle to be shown even for

freeform windows

Freeform windows forced to open on displays that do not support desktop
windowing (i.e. via adb or cts tests) should not show the app header.

Bug: 434025200
Test: atest FreeformWindowingModeTests, manual
Flag: EXEMPT minor bugfix
Change-Id: I78754317ec8d9760c91332effc67af325503539a