1. Update Notification Listener and A11y settings to call
RestrictedLockUtilsInternal rather than checking appOp themselves
2. Rename ecm related methods to include Ecm rather than AppOp -
implementation details are being moved to permissions module and may
change.
Bug: 297372999
Test: Manually tested on device. Automaated tests to follow
Change-Id: Ie3e16b502993b21a7e34eab0d661f98814b3cfd5