Rename Drupal\Core\Entity\Query\QueryInterface::getEntityType() to getEntityTypeId()

This should be it, added the implements QueryInterface to QueryBase, otherwise those methods aren't connected to the interface but the docblocks says it does.

1: query-get-entity-type-id-2191651-1.patch queued for re-testing.

Hm, let's do a bit more here :)

This patches changes the constructor to EntityTypeInterface, which was the only reason we needed entityManager, so we can remove that.

And it does the same for EntityQueryFactoryInterface and the Sql and Config factory, there is no need to pass around the entity manager there either, it's a service, and if a specific factory or query implementation needs the entity manager, they can always inject that directly into themself.