user_form_test.module

<?php


/**
 * @file
 * Support module for user form testing.
 */

/**
 * Implements hook_form_FORM_ID_alter() for user_cancel_form().
 */
function user_form_test_form_user_cancel_form_alter(&$form, &$form_state) {
    $form['user_cancel_confirm']['#default_value'] = FALSE;
    $form['access']['#value'] = \Drupal::currentUser()->hasPermission('cancel other accounts');
}