Update DozeSensors and DozeBrightnessSensor on posture changes

If the posture changes while AOD is running, make sure
sensors are unregistered + registered properly.

Test: manual, enable AOD and then close/open and check that
correct sensors are registered (dumpsys sensorservice)
Test: atest DozeScreenBrightnessTest DozeSensorsTest
Fixes: 192805135
Fixes: 199344667

Change-Id: I5093dc43e062144adca757c94fa708f51be57a44