refs #18721 [finc] moving role="search" into searchbox form

* navigation landmark isn't needed anymore

themes/finc/templates/search/searchbox.phtml

@@ -44,7 +44,7 @@ $hiddenFilterParams = $this->searchTabs()->getCurrentHiddenFilterParams($this->s
       <?php if (!empty($tabs)): ?></div><?php endif; ?>
   </div>
 <?php else: ?>
-  <form id="searchForm" class="searchForm navbar-form navbar-left flip" method="get" action="<?=$this->url($basicSearch)?>" name="searchForm" autocomplete="off">
+  <form id="searchForm" class="searchForm navbar-form navbar-left flip" method="get" action="<?=$this->url($basicSearch)?>" name="searchForm" autocomplete="off" role="search">
     <?= $this->context($this)->renderInContext('search/searchTabs', ['searchTabs' => $tabConfig['tabs']]); ?>
     <?php $placeholder = $this->searchbox()->getPlaceholderText($tabConfig['selected']['id'] ?? null); ?>
     <?php /* finc: keep "required" */ ?>