Double-combo work does not migrate all derivatives

[laritakr]

Descriptive summary

Active Fedora derivatives are stored in a directory. In Valkyrie, these need to be migrated into Hyrax::FileMetadata objects as part of the "lazy migration".

The code that persists derivatives is https://github.com/samvera/hyrax/blob/double_combo/app/services/hyrax/valkyrie_persist_derivatives.rb#L19-L36

Acceptance Criteria/Expected Behavior

• Saving an ActiveFedora object using the lazy migration will migrate derivative files into Valkyrized Hyrax::FileMetadata objects

Related work

See https://github.com/samvera/hyrax/blob/double_combo/lib/freyja/resource_factory.rb#L68-L69

Ref double_combo pull request #6221