Magento – Magento 2.3.3 – Programmatically shipment email sent in the wrong language

I am trying to programmatically create the shipment and I succeeded in this operation.
To do this I create a new CLI Command which I obviously run by command line.

I have only 1 storeview and the default locale is Italian.

The problem is about sending the email to the customer because it is always sent in English.

I try different ways to send the shipment email and the last is using the class

Magento\Sales\Model\Order\Email\Sender\ShipmentSender 

in this way

$this->shipmentSender->send($shipment);

after had set

$this->state->setAreaCode(\Magento\Framework\App\Area::AREA_FRONTEND);

I also tried the class

Magento\Shipping\Model\ShipmentNotifier

in this way

$this->shipmentNotifier->notify($shipment);

I also try to embed the code inside a statement of EnvironmentEmulation using

Magento\Store\Model\App\Emulation

using the following code

$this->emulation->startEnvironmentEmulation($order->getStoreId());

// send shipping confirmation e-mail to customer
$this->shipmentNotifier->notify($shipment);

$this->emulation->stopEnvironmentEmulation();

I don't know if this is a bug, as many other I found or if I'm wrong.

Note: if i create and send the shipment from backend the email is in the correct language.

EDIT:

I try executing the code by external php script using ObjectManager with the following code:

<?php
use Magento\Framework\App\Bootstrap;

require __DIR__ . '/../app/bootstrap.php';

$params = $_SERVER;

$bootstrap = Bootstrap::create(BP, $params);

$obj = $bootstrap->getObjectManager();

$state = $obj->get('Magento\Framework\App\State');
$state->setAreaCode('frontend');

$orderId = "000000009";

$order = $obj->get('Magento\Sales\Model\OrderRepository')->get($orderId);

$notifier = $obj->get('Magento\Sales\Model\Order\Shipment\NotifierInterface');

foreach($order->getShipmentsCollection() as $ship) {

    $notifier->notify($order,$ship);

}

?>

…but I get the same result: the shipment email is sent in english and not i italian.

Please, help me!

Thank you.