Notification Overview: Use $query->hasResult() instead of $query->count()

refs #9632

modules/monitoring/application/views/scripts/list/notifications.phtml

@@ -12,13 +12,6 @@ if (! $this->compact): ?>
 </div>
 <?php endif ?>
 <div class="content">
-<?php
-
-if (count($notifications) === 0) {
-    echo $this->translate('No notifications found matching the filter') . '</div>';
-    return;
-}
-?>
     <table data-base-target="_next" class="action">
     <tbody>
     <?php foreach ($notifications as $notification):
@@ -71,4 +64,7 @@ if (count($notifications) === 0) {
     <?php endforeach ?>
     </tbody>
     </table>
+<?php if (! $notifications->hasResult()): ?>
+  <?= $this->translate('No notifications found matching the filter'); ?>
+<?php endif ?>
 </div>