Also optimize ordered queries with composite ordering #416
Description
#410 optimizes ordered queries that order on a single field, e.g. orderBy(({ user }) => user.age). However, we currently do not optimize queries that order on composite fields, e.g. orderBy(({ user }) => [user.age, user.birth_month]). We should improve the optimization further such that we load the next N items keeping into account the composite order.