Views Exposed Formの複数単語入力（textfield）をフォーム上だけ複数行入力（textarea）にする方法

modles/custom/you_module/you_module.module

/**
 * Views Exposed form.
 *
 * @param $form
 * @param FormStateInterface $form_state
 * @param $form_id
 */
function your_module_form_views_exposed_form_alter(&$form, FormStateInterface $form_id) {
  switch ($form['#id']) {
    case 'your_form_id':
      $form['field_xxxxx']['#type'] = 'textarea';
      $form['field_xxxxx']['#rows'] = 5;
      break;
  }
}
/**
 * Views pre view.
 *
 * @param \Drupal\views\ViewExecutable $view
 * @param $display_id
 * @param array $args
 */
function your_module_views_pre_view(ViewExecutable $view, $display_id, array &$args) {
  if ($view->id() == 'your_view_id' && $display_id == 'your_display_id) {
      $value = \Drupal::request()->query->get('field_xxxxx');
      if (!empty($value)) {
        $value = trim(preg_replace('![\r\n]+!', ' ', $value));
        \Drupal::request()->query->set('field_xxxxxx', $value);
      }
    }
  }
}