refactor: changed lazyloading with fetchpriority

Author: buggyzap

templates/catalog/_partials/category-header.tpl

@@ -13,7 +13,7 @@
               <div class="category-cover mb-4">
                 <img src="{$category.image.large.url}" 
                   alt="{if !empty($category.image.legend)}{$category.image.legend}{else}{$category.name}{/if}" 
-                  loading="lazy" 
+                  fetchpriority="high" 
                   class="img-fluid"
                   width="{$category.image.large.width}" 
                   height="{$category.image.large.height}">