Notifications API fixes for In-App

[GPortas]

What this PR does / why we need it:

Endpoint: notifications/all

Enhancements:

• When the query parameter inAppNotificationFormat=true is set:

  • Notifications of types:

    • REQUESTFILEACCESS
    • REQUESTEDFILEACCESS
    • GRANTFILEACCESS
    • REJECTFILEACCESS

  now return both the dataset display name and dataset persistent identifier.

Notifications of type DATASETMENTIONED now return a formatted JSON in the additionalInfo field when this field contains a valid persisted JSON string, instead of a raw JSON string.

Which issue(s) this PR closes:

• Closes Update Notifications API response values #11804

Suggestions on how to test this:

• Visual inspection of the new added properties, and related unit test cases
• Test generating the updated notification types and test the endpoint for InApp notifications by calling:

curl -H "X-Dataverse-key:$API_TOKEN" "$SERVER_URL/api/notifications/all?inAppNotificationFormat=true"
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?:
Yes, attached

[coveralls]

coverage: 23.55% (+0.009%) from 23.541%
when pulling 2d0d062 on 11804-notifs-api-ext
into 08b9ec6 on develop.

[ekraffmiller]

Hi @GPortas , I tested this with the frontend, and I found some issues in the response data.

For GRANTFILEACCESS and REJECTFILEACCESS
notifications, it's returning objectDeleted: true, rather than the datasetDisplayName and datasetPersistentId. For example for GRANTFILEACCESS, the notification coming from the API:


{

displayAsRead: true


id: 9


objectDeleted: true


sentTimestamp: "2025-10-03T00:23:32Z"


type: "GRANTFILEACCESS"

}


For REQUESTEDFILEACCESS, it's not returning the full datasetPersistentId.
For example it is returning:
datasetPersistentIdentifier: "FK2/1LPTK4"
when it should be:
datasetPersistentIdentifier: ”doi:10.5072/FK2/1LPTK4"




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