Embeddable in Keyset represented as constituent values since 1.6.10

[beikov]

Starting with Blaze-Persistence 1.6.10 we seem to expand embeddables by which one orders by also in the select clause, leading to unexpected types in the Keyset. Also see #1827 and the reproducer https://github.com/mickroll/demonstrator/tree/blazebit-keyset-embedded-id