Hide some options when desktop mode is available

When desktop mode is available (flag enabled), hide some freeform
specific buttons:
- hide freeform from app menu in recents
- hide maximize button from window captions

Bug: 242906219
Test: test that buttons are not shown when desktop mode is enabled
Change-Id: I4c3e3f5ce1221eef853d73e2b395b362037c9cca