Export only includes encoding for the last multipart/form-data field

Hi team,

When I set per-field Content-Type for a multipart/form-data request body (e.g. foo: application/json, bar: image/jpeg, baz: text/plain), the OpenAPI export (YAML/JSON) only emits encoding for the last field. The earlier fields’ contentType entries are missing.

Acctual

"requestBody": {
  "content": {
    "multipart/form-data": {
      "encoding": {
        "baz": { "contentType": "text/plain" }
      },
      "schema": {
        "type": "object",
        "properties": {
          "foo": { "type": "string", "example": "" },
          "bar": { "type": "string", "example": "" },
          "baz": { "type": "string", "example": "" }
        }
      }
    }
  }
}

Expected

"encoding": {
  "foo": { "contentType": "application/json" },
  "bar": { "contentType": "image/jpeg" },
  "baz": { "contentType": "text/plain" }
}

Env
Apidog(Mac), 2.7.33