Add support for in_clause_parameter_padding when using multiLoad

While the hibernate.query.in_clause_parameter_padding optimization works fine for JPQL and Criteria API, if we use a multiLoad request:

Hibernate will still use 3 arguments instead of the closest upper power-of-two integer:

For more details, check out this article as well.

A replicating test case is available in my High-Performance Java Persistence GitHub repository.