Optimize commit for H2 persistence

Issue Description:

https://github.com/kiegroup/drools/pull/5368#discussion_r1247581836
Optimize commit for SafepointStrategy.EXPLICIT or SafepointStrategy.AFTER_FIRE in H2 persistence, say, commit only at the end of a batch call.

Acceptance Criteria:

Implement the optimization

Run benchmark to compare Infinispan-embedded with H2 MVStore