Update reference to 'trigger_label'.

tests/src/FunctionalJavascript/LayoutBuilderDirectAddTestBase.php

@@ -61,7 +61,7 @@ abstract class LayoutBuilderDirectAddTestBase extends WebDriverTestBase {
    */
   protected function setTriggerLabel($setting) {
     $this->config('lb_direct_add.settings')
-      ->set('trigger_label', $setting)
+      ->set('label', $setting)
       ->save();
   }