Display-aware windowing modes.

Fallback to FULLSCREEN for all windowing modes that are not supported
according to DWPC (i.e. the VDM display policy)

Fix: 342689097
Fix: 378663612
Bug: 410092905
Bug: 261155110
Test: presubmit
Test: atest DisplayAreaPolicyTests
Flag: android.companion.virtualdevice.flags.gwpc_aware_windowing_mode

Change-Id: I16db7d77f713c3d38e8612cbfa340f179dc7035b