10254 fixing redirects for records harvested from "Generic OAI archives" (i.e., non-Dataverse OAI servers)

[landreev]

What this PR does / why we need it:

In 6.1, redirects for harvested records are broken as described in the title (because the init() method in the dataset page returns something jsf no longer likes).

Note that the fix in the PR was already included in the 6.1 patch deployed in IQSS prod., and is the reason the redirects are working properly in the SRDA collection (our only "generic", non-Dataverse harvested collection at the moment).

Which issue(s) this PR closes:

Closes #10254

Special notes for your reviewer:

Suggestions on how to test this:

Running develop, if you harvest the ControlSetTest from demo, with the "Generic OAI server" in the configuration, an attempt to click on the search card for each harvested dataset will result in a messy 500.

1. Simple fix number 1 from this PR: With this fix in place, the redirect will happen (it's still not going to work, mind you, it will attempt to redirect using the DOI resolver, and the dois demo uses are fake; but you will get a clean "no such doi" page from Datacite, and no 500s from your Dataverse).
2. Simple fix number 2.: In the "Edit Harvsting Client", change the "Archive URL" (step 4. of the dialog) to https://demo.dataverse.org/dataset.xhtml?persistentId=doi: - this will make the redirects back to demo actually work (i.e., it will be using the url you entered for the redirects, instead of doi resolver used by default).

An alternative QA: look at https://dataverse.harvard.edu/dataverse/srda_harvested in production where this fix is already deployed. Click on any search card, it should redirect you to the source properly.

Does this PR introduce a user interface change? If mockups are available, please link/include them here:

Is there a release notes update needed for this change?:

Additional documentation:

[coveralls]

coverage: 20.735% (-0.001%) from 20.736%
when pulling bb49ed0 on 10254-fix-harvested-redirects
into d5bb0c2 on develop.

[github-actions]

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