Allow to alter enforce_user_fields_have_unfilled_required_fields

How to use the new hook?

/**
 * Implements hook_enforce_user_fields_have_unfilled_required_fields().
 */
function MY_MODULE_enforce_user_fields_have_unfilled_required_fields(&$result, \Drupal\Core\Session\AccountInterface $account) {
   if (!$result) {
    $foo_service = \Drupal::service("foo");
    $result = $foo_service->isFooBarFilled($account);
  }
}

sorry, my bad

Changes in this patch:

enforce_user_fields.api.php
- $result = $foo_service->isFooBarFilled($account);
+ $result = !$foo_service->isFooBarFilled($account);

alter for profile module:

/**
 * Implements hook_enforce_user_fields_have_unfilled_required_fields().
 */
function MY_MODULE_enforce_user_fields_have_unfilled_required_fields(&$result, \Drupal\Core\Session\AccountInterface $account) {
   if(!$result){
    /** @var ProfileStorageInterface $profile_storage */
    $profile_storage = \Drupal::service('entity_type.manager')->getStorage('profile');

    $profile_types = \Drupal::entityQuery('profile_type')->execute();
    $profile_type_entities = ProfileType::loadMultiple($profile_types);
    $user_roles = $account->getRoles();
    foreach ($profile_type_entities as $type){
      $actual_profile_id = $type->id();
      $is_account_have_role = in_array($actual_profile_id, $user_roles);

      if($is_account_have_role && $profile = $profile_storage->loadByUser($account, $actual_profile_id)){

        $field_names = array_keys($profile->getFields());

        foreach ($field_names as $field_name){
          $field_definition = $profile->get($field_name)->getFieldDefinition();
          if ($field_definition instanceof ThirdPartySettingsInterface) {
            if ($field_definition->isRequired() && $profile->get($field_name)->isEmpty()) {
              $result = TRUE;
              break;
            }
          }
        }
      }
      if($result){break;}
    }
  }
}