Hyrax-5844 - Cannot remove embargo from work - 2

[fritzfreiheit]

Fixes #5844 ; refs #5572

Unembargoing a work under valkyrie throws an error

When deactivating an embargo on a work under koppie image/valkyrie, a TCP error is thrown by Hyrax::PermissionsController because it attempts to load ActiveFedora resource.

Proposed change(s):

• Update Hyrax::PermissionsController to

To test:

• In koppie/nurax-pg, navigate to a Work which contains an embargo
• Click the "Edit" button
• In the "Save Work" box on the right side, click the "Embargo Management Page" link in the Visibility section
• Click the "Deactivate Embargo" button
• Error message appears (see screenshot above)

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