Fix the three skipped tests in `generic_works_controller_spec`

[kirkkwang]

There are three test that currently isn't passing CI all in the generic_works_controller_spec

https://github.com/samvera-labs/hyrax-iiif_av/blob/main/spec/controllers/generic_works_controller_spec.rb#L45-L52
https://github.com/samvera-labs/hyrax-iiif_av/blob/main/spec/controllers/generic_works_controller_spec.rb#L54-L65
https://github.com/samvera-labs/hyrax-iiif_av/blob/main/spec/controllers/generic_works_controller_spec.rb#L67-L77