remove duplicate properties keys

[stevenferey]

What this PR does / why we need it:

Remove duplicate property keys from property files

Which issue(s) this PR closes:

Closes #9169

Special notes for your reviewer:

Suggestions on how to test this:

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?:

No

Additional documentation:

[pdurbin]

@stevenferey thanks for the pull request!

I have no idea why but edu.harvard.iq.dataverse.api.FilesIT.testAccessFacet failed:

From https://jenkins.dataverse.org/job/IQSS-Dataverse-Develop-PR/job/PR-9718/1/testReport/junit/edu.harvard.iq.dataverse.api/FilesIT/testAccessFacet/

[pdurbin]

/push-image

[github-actions[bot]]

:package: Pushed preview images as

ghcr.io/gdcc/dataverse:9169-duplicate-property-key

ghcr.io/gdcc/configbaker:9169-duplicate-property-key

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

[qqmyers]

FWIW: I've seen this on another PR - #9599. Not sure what it is yet.

[qqmyers]

@stevenferey - can you make the changes requested above so this can move forward. (If not, let us know if you're OK with the change and we can get someone else to edit.)