Disable DND status change notification on watches.

In some situations the watch may show notification when the zen mode (do
not disturb) has changed. However, when this happens clicking on the
notification has no effect as outlined in the bug report. We've
determined that we do not want this notification to ever appear on a
watch.

Bug: 74178001
Change-Id: I68502a83a0914a6aea50ef99b0a3e28270689e0d
diff --git a/services/core/java/com/android/server/notification/ZenModeHelper.java b/services/core/java/com/android/server/notification/ZenModeHelper.java
index 669d556..24fd331 100644
--- a/services/core/java/com/android/server/notification/ZenModeHelper.java
+++ b/services/core/java/com/android/server/notification/ZenModeHelper.java
@@ -1182,8 +1182,11 @@
     }
 
     private void showZenUpgradeNotification(int zen) {
+        final boolean isWatch = mContext.getPackageManager().hasSystemFeature(
+            PackageManager.FEATURE_WATCH);
         final boolean showNotification = mIsBootComplete
                 && zen != Global.ZEN_MODE_OFF
+                && !isWatch
                 && Settings.Global.getInt(mContext.getContentResolver(),
                 Settings.Global.SHOW_ZEN_UPGRADE_NOTIFICATION, 0) != 0;