ISTWCMS-7068 Add search label for no block title

src/Plugin/Block/UwCblOfisExpertSearch.php

@@ -110,6 +110,12 @@ class UwCblOfisExpertSearch extends BlockBase implements ContainerFactoryPluginI
     // Set the uuid.
     $search['uuid'] = $this->configuration['uuid'];
 
+    // If there is no block title, then set the label so that
+    // the template will know to place a visually hidden one.
+    if (!$this->configuration['label_display']) {
+      $search['label'] = $this->t('OFIS expert search');
+    }
+
     // Return the build array with the template ane variables.
     return [
       '#theme' => 'uw_block_ofis_expert_search',