If OA Button does not return an embargo, set "checked for embargo date"

[anaelizabethenriquez]

In Fall 2023, we planned that if OA Button returned data in other fields but did not provide an embargo end date, we would leave the embargo blank and queue it for manual review. After manually reviewing many of these, I think we can trust this data -- when OA Button returns other data but does not return an embargo, we should assume no embargo exists.

This means that the "checked for embargo date" boolean should be set to "yes" for such items.

[anaelizabethenriquez]

Closing this because it duplicates #825