appview/layouts/fragments: remove explicit role and orientation from hr tag

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

···
       />
       <p>{{ $user | resolve | truncateAt30 }}</p>
   </div>
-  <hr class="h-1 w-full mb-1 mt-2" role="separator" aria-orientation="horizontal" />
+  <hr class="h-1 w-full mb-1 mt-2" />
   <ul id="navigation-menu-popover">
       <li>
         <a href="/{{ $user }}">