[Notifier] Async testing

[GrinWay]

I've described everything here:
https://stackoverflow.com/questions/78966921/symfony-7-2-notifier-component-testing-i-can-test-sending-only-sync-but-not-a

[OskarStark]

So do you want to change the docs, do you have a specific question? I don't know what is this ticket about.

[GrinWay]

There is a bug i suggest, all the docs are fine.

I can test sending only "sync" but not "async" messages using NotifierInterface service

When I use "NotifierInterface" service for sending "async" messages everything works

But when it comes to tests, I don't know why, but my tests don't see "async" messages were sent by "NotifierInterface" service