ISTWCMS-3380: fixing submenus on the menu twig

source/_patterns/04-components/menu/menu.twig

@@ -68,7 +68,9 @@
             {{ item.text }}
           {% endif %}
         </a>
-        {% if item.submenu %}
+        {% if item.below %}
+          {{ menus.menu_links(item.below, attributes, menu_level + 1) }}
+        {% elseif item.submenu %}
           {{ menus.menu_links(item.submenu, attributes, menu_level + 1) }}
         {% endif %}
       </li>