task: #3606709 Remove superflous property from update MailHandler

namespace Drupal\update;

use Drupal\Component\Datetime\TimeInterface;

use Drupal\Core\Entity\EntityTypeManagerInterface;

use Drupal\Core\Language\LanguageManagerInterface;

use Drupal\Core\Session\AccountInterface;

  public function __construct(

    protected readonly EntityTypeManagerInterface $entityTypeManager,

    protected readonly LanguageManagerInterface $languageManager,

    protected readonly TimeInterface $time,

    /**

     * @var \Closure(): \Drupal\Core\Mail\MailManagerInterface

     */