TypeScript-Axios Generator Creates Interface Properties with Single Quotes

When using the typescript-axios generator to create TypeScript interfaces from an OpenAPI spec, all property names in the generated interfaces are surrounded by single quotes, which is not the preferred TypeScript syntax style.
For example, the generated interface looks like:

export interface UserProfileDto {
    /**
     * The unique identifier for the user
     * @type {number}
     * @memberof UserProfileDto
     */
    'id': number;
    /**
     * The username of the user
     * @type {string}
     * @memberof UserProfileDto
     */
    'username': string;
    /**
     * The email address of the user
     * @type {string}
     * @memberof UserProfileDto
     */
    'email': string;
    /**
     * The first name of the user
     * @type {string}
     * @memberof UserProfileDto
     */
    'firstName': string;
    // ... more properties
}

But I want the standard TypeScript interface style without quotes:

export interface UserProfileDto {
    /**
     * The unique identifier for the user
     * @type {number}
     * @memberof UserProfileDto
     */
    id: number;
    /**
     * The username of the user
     * @type {string}
     * @memberof UserProfileDto
     */
    username: string;
    /**
     * The email address of the user
     * @type {string}
     * @memberof UserProfileDto
     */
    email: string;
    /**
     * The first name of the user
     * @type {string}
     * @memberof UserProfileDto
     */
    firstName: string;
    // ... more properties
}

Configuration Used
Here is my current OpenAPI Generator configuration:

{
    "$schema": "./node_modules/@openapitools/openapi-generator-cli/config.schema.json",
    "spaces": 2,
    "generator-cli": {
      "version": "7.11.0",
      "generators": {
        "typescript-types": {
          "generatorName": "typescript-axios",
          "output": "src/generated",
          "glob": "swagger.json",
          "skipValidateSpec": true,
          "additionalProperties": {
            "withSeparateModelsAndApi": true,
            "enumNameSuffix": "",
            "enumPropertyNaming": "UPPERCASE",
            "withInterfaces": true,
            "supportsES6": true,
            "modelPropertyNaming": "original",
            "modelPackage": "models",
            "apiPackage": "apis",
            "stringEnums": true
          }
        }
      }
    }
  }

Attempted Solutions

1. Setting modelPropertyNaming: "original"
2. Trying different generators (typescript-fetch, typescript-node)

Expected Behavior
The TypeScript interfaces should be generated with property names that don't have single quotes around them, following standard TypeScript syntax.

The issue names the typescript-axios generator but no repository files or tests. Reproduce the generated interfaces with the supplied configuration and an OpenAPI spec, then trace the generator output to identify where property names receive quotes. Done means generated valid-name properties use the requested unquoted TypeScript style without breaking names that require quoting.