Issue #2058279 by mondrake: Align mini pager accessibility markup to full pager.

core/modules/views/templates/views-mini-pager.html.twig

@@ -12,5 +12,6 @@
  */
 #}
 {% if items %}
+  <h2 class="visually-hidden">{{ 'Pages'|t }}</h2>
   {{ items }}
 {% endif %}