Duplicate array key default_value in ViewCloneFormController

In the "form" function found in \core\modules\views_ui\lib\Drupal\views_ui\ViewCloneFormController.php the "#default_value" array key is unconditionally assigned twice.

offending code:

$form['label'] = array(
      '#type' => 'textfield',
      '#title' => $this->t('View name'),
      '#required' => TRUE,
      '#size' => 32,
      '#default_value' => '',
      '#maxlength' => 255,
      '#default_value' => $this->t('Clone of @label', array('@label' => $this->entity->label())),
    );