monitoring: Show host_name in the detail area too if it's different from the display_name

refs #7843

modules/monitoring/application/views/scripts/show/components/header.phtml

@@ -19,6 +19,9 @@ $isService = $object->getType() === $object::TYPE_SERVICE;
         </td>
         <td>
             <b><?= $this->escape($object->host_display_name) ?></b>
+            <?php if ($object->host_display_name !== $object->host_name): ?>
+            <small>(<?= $this->escape($object->host_name) ?>)</small>
+            <?php endif ?>
             <?php if ($object->host_address && $object->host_address !== $object->host_name): ?>
             <br>
             <?= $this->escape($object->host_address) ?>