appview/layouts/fragments: add javascript to set aria-current on dropdown links

appview/pages/templates/layouts/fragments/topbar.html

···
         }
     });
 });
+
+const navigationPopoverLinks = document.querySelectorAll("#navigation-menu-popover li a");
+const currentPageURL = window.location.href
+navigationPopoverLinks.forEach(link => {
+  const navigationPopoverLinkURL = link.href
+  if (navigationPopoverLinkURL === currentPageURL) {
+    link.ariaCurrent = "page"
+  }
+})
 </script>
 {{ end }}