Noissue - Use selectattr() filter to filter page metadata

includes/product-topics-accordion.tmpl

 <dl id="product-topics-accordion" class="accordion">
   {% for category in product.help_categories %}
-    {% set articles = get_pages_metadata({ "product_id": product_id, "template": "article", "category": category.name }) %}
+    {% set articles = get_pages_metadata()|selectattr("product_id", "equalto", product_id)
+                                          |selectattr("template", "equalto", "article")
+                                          |selectattr("category", "equalto", category.name)|list %}
     {% if articles %}
       <dt role="heading" aria-level="3" class="accordion-heading">
         <button aria-expanded="true" aria-controls="sect-{{ category.slug }}" id="heading-{{ category.slug }}" class="accordion-toggle-button">
           <img src="/dist/img/png/arrow-icon-secondary.png" srcset="/dist/img/svg/arrow-icon-secondary.svg 2x" alt="{{ "Toggle arrow" | translate("accordion-toggle-icon", "Image alt text") }}">
           {{ category.name | translate( category.slug + "-category-title", "Category title") }}
         </button>
       </dt>
       <dd role="region" aria-labelledby="heading-{{ category.slug }}" id="sect-{{ category.slug }}" class="accordion-body">
         <ul class="underlined-list">
           {% for article in articles %}
           <li>
             <a href="{{ article["page"] }}">
               {{ article.title | translate( get_page_name( article["page"]) + "-title", "Article title") }}
             </a>
           </li>
           {% endfor %}
         </ul>
       </dd>
     {% endif %}
   {% endfor %}
 </dl>