set CRITICAL urgency for notification internal notifications

ensure that presentation/offline mode toggles will display a notify

src/modules/notification/e_mod_main.c

@@ -36,6 +36,7 @@ _notification_show_common(const char *summary,
    n.icon.icon = "enlightenment";
    n.summary = summary;
    n.body = body;
+   n.urgency = E_NOTIFICATION_NOTIFY_URGENCY_CRITICAL;
    e_notification_client_send(&n, NULL, NULL);
 }