Hello,
We introduced Jakarta Data in WildFly Preview 34, at 'preview' stability, and the integration should work fine in standard WF as well. It has no dependencies that we don't provide in standard WF and is based on std WF's Hibernate ORM 6.6. So this is largely a matter of moving a few bits so they are part of ee-feature-pack/galleon-shared instead of preview/galleon-local.