redux-toolkit: Bug: codegen-openapi incorrectly handles multipart/form-data requests

OpenAPI spec:

    "/api/Avatar": {
      "post": {
        "tags": [
          "Avatar"
        ],
        "requestBody": {
          "content": {
            "multipart/form-data": {
              "schema": {
                "type": "object",
                "properties": {
                  "file": {
                    "type": "string",
                    "format": "binary"
                  }
                }
              },
              "encoding": {
                "file": {
                  "style": "form"
                }
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Success",
            "content": {
              "text/plain": {
                "schema": {
                  "type": "string"
                }
              },
              "application/json": {
                "schema": {
                  "type": "string"
                }
              },
              "text/json": {
                "schema": {
                  "type": "string"
                }
              }
            }
          }
        }
      }      
    },

When you generate API using above specification and send a request you will see that the request content-type is application/json, but should be multipart/form-data. This obviosly results in 415 (Unsupported Media Type) returned from the server.