Issue #3526249: Move the access logic in FormBuilder::handleInputElement() to...

Issue #3526249: Move the access logic in FormBuilder::handleInputElement() to its own protected method

Closes #3526249

core/lib/Drupal/Core/Form/FormBuilder.php

@@ -185,6 +185,21 @@ public function __construct(FormValidatorInterface $form_validator, FormSubmitte
     $this->themeManager = $theme_manager;
   }
 
+  /**
+   * Determines if the element is accessible based on the #access property.
+   *
+   * @param array $element
+   *   A renderable array element.
+   *
+   * @return bool
+   *   TRUE if the element should be considered accessible.
+   */
+  protected function isElementAccessible(array $element): bool {
+    return !isset($element['#access']) ||
+      ($element['#access'] instanceof AccessResultInterface && $element['#access']->isAllowed()) ||
+      ($element['#access'] === TRUE);
+  }
+
   /**
    * {@inheritdoc}
    */
@@ -1228,7 +1243,7 @@ protected function handleInputElement($form_id, &$element, FormStateInterface &$
       !in_array($element['#type'], ['item', 'value'], TRUE) &&
       (
         ($form_state->isProgrammed() && $form_state->isBypassingProgrammedAccessChecks()) ||
-        ($form_state->isProcessingInput() && (!isset($element['#access']) || (($element['#access'] instanceof AccessResultInterface && $element['#access']->isAllowed()) || ($element['#access'] === TRUE))))
+        ($form_state->isProcessingInput() && $this->isElementAccessible($element))
       );
 
     // Set the element's #value property.