IBX-12339: Email sending not working : Invite user

[vidarl]

🎫 Issue	IBX-12339

Related PRs:

• IBX-12339: Log a warning when notifier subscription is missing admin-ui#2036

Strictly speaking not related, but needed in order to make the invite user functionality work end-to-end (IBX-12340):

• IBX-12340: Pass the required struct option when registering from invitation user#140

Description:

Ibexa\AdminUi\Notifier\UserInvitation decorates Ibexa\Contracts\User\Invitation\InvitationSender
and only send emails when notifications.subscriptions contains
Ibexa\AdminUi\Notifier\Notification\UserInvitation. No recipe subscribes that class: the shipped
config/packages/ibexa.yaml subscribes Ibexa\Contracts\User\Notification\UserInvitation, which the
decorator never reads. ( The difference is Ibexa\AdminUi... vs Ibexa\Contracts.... in the namespace)

So on a clean install, the invite-user functionality never sends the invitation e-mail.

This issue is similar to IBX-11241 (UserPasswordReset email never sent) and was fixed the same way in #236.

Also adding FormSubmitted on editions where that is applicable. The subscriptions array
in default and admin_group won't be merged. Thus, it needs to be copied to admin_group.
Submitting forms from the back office might not be common, but it can happen.

Applied to 5.0 and 6.0 of all four editions. FormSubmitted only goes to experience and commerce,
since ibexa/form-builder is not part of oss or headless.

For QA:

On a clean 5.0.10 (or 6.0) install with a working MAILER_DSN:

1. Before the change: invite someone from Admin → Users → Guest accounts → Invite members. The
   invitation row appears in ibexa_user_invitation with site_access_name = admin, and no mail is
   sent.
2. After the change (composer recipes:install ibexa/<edition> --force, then cache:clear): repeat
   the invitation. The mail arrives, containing a link to
   /admin/from-invite/register/{hash}.

Documentation:

[github-actions]

Thanks for contribution! 🎉

To test the changes please execute:

composer config extra.symfony.endpoint https://api.github.com/repos/ibexa/recipes-dev/contents/index.json?ref=flex/pull-257

before executing the recipes.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud