Description
There are currently multiple problems with the ability to inject a Stage.Session or a Mutiny.Session related with, and not only:

• the fact that such beans get disposed before the execution of the operation
• the fact that some operations are delegated to a different thread, leading for the ArC proxy to return a different instance from its threadlocal

While we can (and should) be able to fix all these issues, it is causing many problems at the moment so I feel it was a mistake to already expose such producers.

This is a breaking change, but the module is flagged as experimental.

Also, it's trivial for people to inject the Stage.SessionFactory | Mutiny.SessionFactory instead, and use it to open sessions as needed. IMO, it's also looking more idiomatic for reactive code.

Implementation ideas
Remove the producers from the project.