version=4 is not passed to Mailing.create on APIv4 so MailingJob gets scheduled

Overview

I'd like to create a single Mailing entity through APIv4 without scheduling a MailingJob and calculating recipients.

Reproduction steps

1. Call Mailing.create through API Explorer or cv
2. Notice that a MailingJob is created

Current behaviour

According to https://github.com/civicrm/civicrm-core/blob/94b9b95547d3f8292740c059f77f83cc45e57b57/CRM/Mailing/BAO/Mailing.php#L1622-L1629 this shouldn't happen by default, but it does: $params['version'] is empty and self::doSubmitActions() is called.

Expected behaviour

$params['version'] is populated so CRM_Mailing_BAO_Mailing::doSubmitActions() doesn't fire.

Comments

This is similar to https://github.com/civicrm/civicrm-core/blob/94b9b95547d3f8292740c059f77f83cc45e57b57/CRM/Member/BAO/Membership.php#L334-L343. In that case Civi\Api4\Service\Spec\Provider\MembershipCreationSpecProvider injects version parameter into the API call, but for Mailing such spec provider doesn't exists.

I can do some work with this, I'm just not sure if that spec provider is missing by design or not...

Also I can pass in version=4 explicitly or use _skip_evil_bao_auto_schedule_ and _skip_evil_bao_auto_recipients_ to prevent submit actions to happen.