Add jsonp for cases where jsonb is not in scope

Add `quarkus-jsonp` dependency for cases where `quarkus-jsonb` is not in scope.

I hesitate to add only `org.glassfish:jakarta.json` as it's the needed dependency to fix the issue, but as I understand it `quarkus-jsonb` is the integration of this library inside Quarkus so I prefere to add it.

Without it native image generation is not possible when an application didn't include `quarkus-jsonb` (I doubt the application even works) due to `com.oracle.graal.pointsto.constraints.UnresolvedElementException: Discovered unresolved type during parsing: javax.json.JsonObject`.

Part of #12625 but not full fix as the issue references two problems.