Assign translation task to passed user.
\Drupal\Core\Session\AccountInterface $user: User object.
Overrides LocalTaskInterface::assign
public function assign(AccountInterface $user) {
$this
->incrementLoopCount(static::STATUS_PENDING, $user
->id());
$this
->set('tuid', $user
->id());
$this
->set('status', static::STATUS_PENDING);
}