TV PiP: fix menu buttons orientation

Fixes the PiP menu buttons orientation after double pressing
expand/collapse by only setting the orientation after the transition has
finished.

Bug: 274750024
Test: manual - start expanded PiP with regular PiP orientation being
different from the expanded one. Press collapse once: orientation
should change with the PiP, double click: orientation should still match
the PiP.

Change-Id: I3bfbe7d68f73b31a5ccb199c1e6c6c6a4d8dd3e2