Dataset compareSummary API: version summary should show tags changes

[ChengShi-1]

What steps does it take to reproduce the issue?
For Categories,

1. create a dataset
2. publish the dataset
3. upload a file
4. publish
5. add a category to the file

No file metadata change from the api result in draft version (the change shows up after published sometimes)

For Tabular Tags,
changes in Tabular Tags wouldn't be reflected on any versions summary or versions comparison.

1. create a dataset
2. publish the dataset
3. upload a tab file
4. add tabular tags

No file metadata change in the api result(it wouldn't show up after published)

• When does this issue occur?
  No details and summary appear

API should show files "changedFileMetaData": 1, but it shows 0
http://localhost:8000/api/v1/datasets/:persistentId/versions/compareSummary?persistentId=doi:10.5072/FK2/KWQX9V

{
    "status": "OK",
    "data": [
        {
            "id": 20,
            "versionNumber": "DRAFT",
            "summary": {
                "files": {
                    "added": 0,
                    "removed": 0,
                    "replaced": 0,
                    "changedFileMetaData": 0,
                    "changedVariableMetadata": 0
                },
                "termsAccessChanged": false
            },
            "contributors": "Dataverse Admin",
            "publishedOn": ""
        },
        {
            "id": 19,
            "versionNumber": "2.0",
            "summary": {
                "files": {
                    "added": 1,
                    "removed": 0,
                    "replaced": 0,
                    "changedFileMetaData": 0,
                    "changedVariableMetadata": 0
                },
                "termsAccessChanged": false
            },
            "contributors": "Dataverse Admin",
            "publishedOn": "2025-07-21"
        },
        {
            "id": 18,
            "versionNumber": "1.0",
            "summary": "firstPublished",
            "contributors": "Dataverse Admin",
            "publishedOn": "2025-07-21"
        }
    ]
}

Also
http://localhost:8000/api/v1/datasets/:persistentId/versions/2.0/compare/:draft?persistentId=doi:10.5072/FK2/KWQX9V&includeDeaccessioned=true

{
    "status": "OK",
    "data": {
        "oldVersion": {
            "versionNumber": "2.0",
            "versionState": "RELEASED",
            "lastUpdatedDate": "2025-07-21T18:16:43Z"
        },
        "newVersion": {
            "versionNumber": "DRAFT",
            "versionState": "DRAFT",
            "lastUpdatedDate": "2025-07-21T18:17:08Z"
        }
    }
}

• Which page(s) does it occurs on?
  Dataset Page

• What happens?
  No result for tags' changes in following api

• compareSummary?
• versions/2.0/compare/:draft?

• To whom does it occur (all users, curators, superusers)?
  JSF and API users

• What did you expect to happen?
  show file metadata changed

Screenshots:
JSF screenshots

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Are you thinking about creating a pull request for this issue?
Help is always welcome, is this bug something you or your organization plan to fix?