This fixes the regression caused by the previous commit
bad26692d0 Set notification TAG and style in TV PIP notification
Bug: 37249867
Test: Manual test (PIP notification UI was dismissed after closing th
PIP by notification UI, or PIP controller dialog. Also checked that
the notification UI was dismissed after the the PIPed activity
becomes fullscreen.)
Change-Id: I4dc6d1ee8035f89583a5fb49aa6c8fdc40bb49a0