Incoherent export with "Download full results" from pivot questions

Describe the bug

Downloading results from a modified question with pivot vizualization creates an export file with a "pivot-grouping" column but without the columns chosen as pivot.

To Reproduce

Open an existing pivot question with an existing filter
Modify said filter
Run the question by clicking the "Play" button
Get a .csv or .xslx export with
Open the file with LibreOffice or equivalent, it has a pivot-grouping column and the columns chosen in vizualization do not appear

Expected behavior

We should have an export coherent with the raw results

Logs

No response

Information about your Metabase installation

{
  "browser-info": {
    "language": "fr",
    "platform": "Linux x86_64",
    "userAgent": "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/112.0",
    "vendor": ""
  },
  "system-info": {
    "file.encoding": "UTF-8",
    "java.runtime.name": "OpenJDK Runtime Environment",
    "java.runtime.version": "11.0.18+10-post-Ubuntu-0ubuntu120.04.1",
    "java.vendor": "Ubuntu",
    "java.vendor.url": "https://ubuntu.com/",
    "java.version": "11.0.18",
    "java.vm.name": "OpenJDK 64-Bit Server VM",
    "java.vm.version": "11.0.18+10-post-Ubuntu-0ubuntu120.04.1",
    "os.name": "Linux",
    "os.version": "5.4.0-146-generic",
    "user.language": "en",
    "user.timezone": "Europe/Paris"
  },
  "metabase-info": {
    "databases": [
      "h2",
      "mysql"
    ],
    "hosting-env": "unknown",
    "application-database": "mysql",
    "application-database-details": {
      "database": {
        "name": "MariaDB",
        "version": "10.3.38-MariaDB-0ubuntu0.20.04.1"
      },
      "jdbc-driver": {
        "name": "MariaDB Connector/J",
        "version": "2.7.6"
      }
    },
    "run-mode": "prod",
    "version": {
      "date": "2023-04-28",
      "tag": "v0.46.2",
      "branch": "release-x.46.x",
      "hash": "8967c94"
    },
    "settings": {
      "report-timezone": null
    }
  }
}

Severity

Annoying

Additional context