Do not allow multiple snooze menus to be open at once

Fixes: 187480963
Test: manual snoozing of multiple notifications
Change-Id: I83a8e697c35b2eb0bb00320628bb42c1b4aeb5e7

packages/SystemUI/src/com/android/systemui/statusbar/notification/row/ExpandableNotificationRow.java

@@ -1102,6 +1102,10 @@ public class ExpandableNotificationRow extends ActivatableNotificationView
     /** The click listener for the snooze button. */
     public View.OnClickListener getSnoozeClickListener(MenuItem item) {
         return v -> {
+            // Dismiss a snoozed notification if one is still left behind
+            mNotificationGutsManager.closeAndSaveGuts(true /* removeLeavebehind */,
+                    false /* force */, false /* removeControls */, -1 /* x */, -1 /* y */,
+                    false /* resetMenu */);
             mNotificationGutsManager.openGuts(this, 0, 0, item);
         };
     }