Fix clearing all notifications when dismissing only one

Previously, swiping away the latest notifications (when 4+ are present) would clear all notifications. Fix allows for individual dismissal only of those swiped.

Author: jennantilla

OneSignalSDK/onesignal/src/main/java/com/onesignal/NotificationSummaryManager.java

@@ -65,7 +65,7 @@ private static Cursor internalUpdateSummaryNotificationAfterChildRemoved(Context
       // If all individual notifications consumed
       //   - Remove summary notification from the shade.
       //   - Mark summary notification as consumed.
-      if (notificationsInGroup == 0) {
+      if (notificationsInGroup == 0 && !group.equals(OneSignalNotificationManager.getGrouplessSummaryKey())) {
          cursor.close();
 
          Integer androidNotifId = getSummaryNotificationId(db, group);