PhoneWindowManager: Allow torch and track skip during ambient display

This allows long press power button for torch and long press
volume buttons for track skip to work during ambient display.

Co-authored-by: razorloves <razorloves@gmail.com>
Co-authored-by: Sam Mortimer <sam@mortimer.me.uk>
Change-Id: I2463579e056364652b549524bc9775da4fa35b1f