ContentTranslationDeleteForm.php

<?php

namespace Drupal\content_translation\Form;

use Drupal\Core\Entity\ContentEntityDeleteForm;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Language\LanguageInterface;

/**
 * Delete translation form for content_translation module.
 *
 * @internal
 */
class ContentTranslationDeleteForm extends ContentEntityDeleteForm {
  
  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return 'content_translation_delete_confirm';
  }
  
  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state, ?LanguageInterface $language = NULL) {
    if ($language) {
      $form_state->set('langcode', $language->getId());
    }
    return parent::buildForm($form, $form_state);
  }

}