update for 9.2

Why

Make patch for issue https://www.drupal.org/project/drupal/issues/3100350 D9.2 compatible

core/modules/path/src/Plugin/Field/FieldWidget/PathWidget.php

@@ -5,6 +5,7 @@
 use Drupal\Core\Field\FieldItemListInterface;
 use Drupal\Core\Field\WidgetBase;
 use Drupal\Core\Form\FormStateInterface;
+use Drupal\path_alias\Entity\PathAlias;
 use Symfony\Component\Validator\ConstraintViolationInterface;
 
 /**
@@ -83,7 +84,7 @@ public function formElement(FieldItemListInterface $items, $delta, array $elemen
    */
   public static function validateFormElement(array &$element, FormStateInterface $form_state) {
     // Trim the submitted value of whitespace and slashes.
-    $alias = rtrim(trim($element['alias']['#value']), " \\/");
+    $alias = PathAlias::trimAlias($element['alias']['#value']);
     if ($alias !== '') {
       $form_state->setValueForElement($element['alias'], $alias);