[Docs] Clarify if programmatic transactions work with repositories and entities and how

[RonBarkan]

Expected Behavior

Looking at the docs https://micronaut-projects.github.io/micronaut-data/latest/guide/index.html#programmaticTransactions It should be clear if TransactionOperations and/or SynchronousTransactionManager can be used correctly with Repositories, e.g. CrudRepository database methods.

Actual Behaviour

Looking at the docs alone (and even trying to poke at some classes), the reader has no idea if these things are compatible. Even if a small test seems to work, there's no gained certainty it is not a fluke.

Steps To Reproduce

n/a

Environment Information

n/a

Example Application

No response

Version

3.10.1 and 4.x

[sdelamo]

@radovanradic could you clarify the documentation?

[radovanradic]

Done in https://github.com/micronaut-projects/micronaut-data/pull/2946