refs #21012 [finc] use external link view helper correctly

* escape url manually (coming from VuFind)
* translate label again (was falsely removed on previous commits)
* enable automatic label escaping by removing 4th parameter

themes/finc/templates/RecordTab/holdingsils.phtml

@@ -179,7 +179,7 @@ if (!empty($holdingTitleHold)): ?>
   <h2><?=$this->transEsc("external_access")?></h2>
   <?php if (!empty($extUrls)): ?>
     <?php foreach ($extUrls as $current): ?>
-      <a href="<?=$this->escapeHtmlAttr($this->proxyUrl($current['url']))?>"><?=$this->translate($current['desc'])?></a>
+      <?=$this->externalLink($this->escapeHtmlAttr($this->proxyUrl($current['url'])), $this->translate($current['desc']))?>
       <br/>
     <?php endforeach; ?>
   <?php endif; ?>