reworked controlled vocab language keys

[stevenwinship]

What this PR does / why we need it: Ever since we merged #10762 we've seen failures of the "Metadata Blocks Properties" check

Which issue(s) this PR closes:#10826

Closes #10826

Special notes for your reviewer:

Suggestions on how to test this: See new unit test

Does this PR introduce a user interface change? If mockups are available, please link/include them here: No

Is there a release notes update needed for this change?: No

Additional documentation: No

[coveralls]

coverage: 20.734% (-0.001%) from 20.735%
when pulling a877831 on 10826-fix-controlledvocab-after-merging-10762
into 4143031 on develop.

[github-actions]

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🚢 See on GHCR. Use by referencing with full name as printed above, mind the registry name.

[pdurbin]

Just a quick question.

[pdurbin]

The changes seem fine to me, though I'm not an expert. The new unit tests are passing, as are the API tests. Approved.

[qqmyers]

While I'm not a fan of merging codes to avoid the Bundle issue, I don't have any alternatives and the solution here does fix the missing properties issue and, as has been noted, the merges affect only a few rare cases.