Sending email with EmailModelSender throws an error after the update to 5.1.3

[yaroslavbr]

Summary

• Email sending functionality using EmailModelSender throws an error after the update to 5.1.3 version from 4.2. Before the update all worked as expected

Steps to reproduce

• According to the documentation - https://doc.oroinc.com/backend/emails/#create-an-email-manually
  I am creating Oro\Bundle\EmailBundle\Form\Model\Email and fill all the data. This is how Email Model look like on xdebug screen:

• Using Oro\Bundle\EmailBundle\Sender\EmailModelSender to send this Email Model (without passing any additional arguments)
  $this->emailProcessor->send($emailModel);

Actual Result
Getting an exception:
Uncaught Error: Call to a member function getId() on null {"exception":"[object] (Error(code: 0): Call to a member function getId() on null at /var/domains/zinkunie-zinkunie-upgrade.test-madia.nl /releases/175/vendor/oro/platform/src/Oro/Bundle/ EmailBundle/Entity/Manager/EmailAddressVisibilityManager.php:55)"}

This is caused because code is trying to access EmailUser::Organization::id while organization is actually empty. Please look at the xdebug screen how EmailUser look like:

Considering EmailUser entity is created by oro from EmailOrigin which I also did not provide by my own. I think this is oro internal bug.

Expected Result
Email sending using EmailModelSender::send() while providing only on Email Model as an argument should work.

Details about your environment

• OroPlatform version: 5.1.3
• PHP version: 8.2.7