Restore Query#list method, implementing it in an efficient way

I think that it is right to remove the deprecation to the method org.infinispan.query.dsl.Query<T>#list, that returns the matched entity lists List<T>.

This method can be used in case the user/customer does not need to get the `QueryResult<E>#hitCount}}.

At the moment the implementations of both embedded and remote queries are not efficient, since they do not delegate to org.hibernate.search.engine.search.query.SearchFetchable#fetchHits to take the performance advantage to not compute the hit count.