System sounds get its own dnd toggle

- Added logic for streams to be muted by dnd (unassociated with ringer)

Test: runtest -x frameworks/base/services/tests/uiservicestests/src/com/android/server/notification/ZenModeHelperTest.java
Bug: 73362490
Change-Id: I1101e67282f7331497e91eb510d2bf4f1ea6b4b1
diff --git a/packages/SystemUI/src/com/android/systemui/volume/VolumeDialogImpl.java b/packages/SystemUI/src/com/android/systemui/volume/VolumeDialogImpl.java
index 90a9fc8..716b58841 100644
--- a/packages/SystemUI/src/com/android/systemui/volume/VolumeDialogImpl.java
+++ b/packages/SystemUI/src/com/android/systemui/volume/VolumeDialogImpl.java
@@ -691,7 +691,8 @@
                 : isZenNone ? (isRingStream || isSystemStream || isAlarmStream || isMusicStream)
                 : isZenPriorityOnly ? ((isAlarmStream && mState.disallowAlarms) ||
                         (isMusicStream && mState.disallowMedia) ||
-                        (isRingStream && mState.disallowRinger))
+                        (isRingStream && mState.disallowRinger) ||
+                        (isSystemStream && mState.disallowSystem))
                 : false;
 
         // update slider max