Fully enable the feature Bug: b/255363741, b/38477228 Test: make DEBUG_ROBOLECTRIC=1 ROBOTEST_FILTER="NotificationVolumePreferenceControllerTest|SeparateRingVolumePreferenceControllerTest|RingerModeAffectedPreferenceControllerTest|SoundSettingsTest" RunSettingsRoboTests -j40 Change-Id: Iec490fc254f71b6461dbf9f9beb4a11645a4a497