Double tap and lift should take to lock screen

The current ambient display design doesn't make sense when the
display is not 'always on', let's wake-up directly to the lock
screen instead.

Change-Id: I217720dcf01a507f43e9da6e1970b2246fb75211
Test: double tap from AOD or screen off
Test: lift from AOD or screen off
Test: receive pulsing notification, long press
Fixes: 73148491
Fixes: 111881300
Bug: 111414690