DND behavior system sounds cannot bypass DND

If media & system feedback is not allowed to bypass DND
(set in Do Not Disturb Behavior Settings), then touch sounds
and lock screen sounds cannot play sounds.

Bug: 69062790
Test: runtest -x frameworks/base/services/tests/notification/src/com/android/server/notification/ZenModeHelperTest.java
Change-Id: Ic599f61d73d06d0616e5a247c537ff35487b5449