Not shown in foreground notifications should not be simulated as shown on pre-M devices

Author: aurimasc

com.unity.mobile.notifications/Runtime/Android/Plugins/com/unity/androidnotifications/UnityNotificationManager.java

@@ -645,9 +645,9 @@ protected static void notify(Context context, int id, Notification notification)
         boolean showInForeground = notification.extras.getBoolean(KEY_SHOW_IN_FOREGROUND, true);
         if (!isInForeground() || showInForeground) {
             getNotificationManager(context).notify(id, notification);
-        }
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) synchronized (UnityNotificationManager.class) {
-            mVisibleNotifications.add(Integer.valueOf(id));
+            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) synchronized (UnityNotificationManager.class) {
+                mVisibleNotifications.add(Integer.valueOf(id));
+            }
         }
 
         try {