refactor(repository): use native SQL for history

[vkrizan]

Refactors PoliciesHistoryRepository to use native SQL to support Postgresql-specific queries (like JSON lookups).

RHINENG-1191

[gwenneg]

Quarkus 3 comes with Hibernate ORM 6 which supports the JSONB type. That may be something to consider instead of transforming the queries to native SQL.

[vkrizan]

@gwenneg does Hibernate 6 support JSONB lookups in HQL? What I've found is that there is no support for it in HQL. It complains about @> operator in HQL ver. 5.

Upgrading to Quarkus 3 might be a heavier lift than changing to native SQL, which most of our team "speak".

[gwenneg]

I haven't tried Hibernate 6 yet but it should support JSONB in HQL AFAIK.

Regarding Quarkus 3, that bump will be mandatory sooner or later anyway because Quarkus 2 won't be supported/maintained forever 😃

[vkrizan]

@gwenneg Per discussion, this would be a much heavier lift at the moment. Would you have time to review this refactoring. Thank you!

[josejulio]

lgtm