Update Prometheus data source to Prometheus type Cortex using API

Using Grafana v9.5.5 on Amazon Linux 2, attempted to update a Prometheus data source by specifying the Prometheus type as Cortex and the Cortex version to > 1.13.x (or 1.14.0) using the Data Source API.

The following command was used:

curl -X POST -H 'Content-Type: application/json' -d @"<working_dir>/data_source.json https://<user>:"<password>"@<url>/api/datasources

where data_source.json has these contents:

{
  "orgId":999999,
  "name":"<data source name>",
  "type":"prometheus",
  "typeName":"Prometheus",
  "typeLogoUrl":"public/app/plugins/datasource/prometheus/img/prometheus_logo.svg",
  "access":"proxy",
  "url":"XXXXXXXXX",
  "password":"",
  "user":"",
  "database":"",
  "basicAuth":false,
  "isDefault":false,
  "jsonData": {
    "httpMethod":"POST",
    "manageAlerts":false,
    "prometheusType":"Cortex",
    "prometheusVersion":"1.14.0",
    "sigV4Auth":true,
    "sigV4AuthType":"default",
    "sigV4Region":"us-east-1"
  },
  "readOnly":false
}

The error that resulted is below, and the data source was not updated. Got the same result when attempting other version like > 1.13.x, or even with type Prometheus and a version such as 2.40.x.

{"message":"bad request data","traceID":""} 

I compared this to an existing data source that was configured manually as Cortex to determine what entries to include in the json. Below is what was received from a GET api command indicating that prometheusType and prometheusVersion are correct entries:

{"id":<id value>,
"uid":"<uid value>",
"orgId":<org id>,
"name": "data source name",
"type":"prometheus",
"typeName":"Prometheus",
"typeLogoUrl":"public/app/plugins/datasource/prometheus/img/prometheus_logo.svg",
"access":"proxy",
"url":"<url of data source>",
"user":"",
"database":"",
"basicAuth":false,
"isDefault":false,
"jsonData":{"httpMethod":"POST","manageAlerts":false,"prometheusType":"Cortex","prometheusVersion":"1.14.0","sigV4Auth":true,"sigV4AuthType":"default","sigV4Region":"us-east-1"},
"readOnly":false}
]

Does the API support this kind of update to a Prometheus data source? If not, can this be requested as a feature update to allow API automation for configuring Prometheus data sources as Cortex type?