How to make transaction mandatory for read requests

[HerrDerb]

I just figured out that I somehow don't need an active transaction to make read requests to my datasource during a QuarkusTest. This is unexpected. I tried to have a look in the configs and whatsoever but could not a find a proper setting.

How do I configure Quarkus with Hibernate ORM to make transactions mandatory even for read operations?

Setting TransactionRequirement to STRICT is not an option as the liquibase migration will no be able to execute.