Invalid TS models when properties are nullable

Hi! It seems the openapi connector is not setting the correct TS type when setting true the nullable flag

For example, with the following JSON OpenAPI definition model:

      "TestObject": {
        "type": "object",
        "properties": {
          "name": {
            "type": "string",
            "nullable": true,
             "default": null,
            "description": "Test property",
            "example": null
          },

It creates a model with the following property:

  @property({jsonSchema: {
  type: [
    'string',
    'null',
  ],
  default: null,
  description: 'Specific endpoint for this queue, if not specified, the generic endpoint for this service will be used',
}})
  endpoint?: string = null;

Obviously, as endpoint is set as string, it throws a TS Check error in build time:
error TS2322: Type 'null' is not assignable to type 'string | undefined'.

Why isn't setting the property type correctly, whereas in the type annotation seems to be aware of it?

Thanks!

Comienza rastreando la generación de modelos TypeScript del conector OpenAPI para una propiedad con nullable: true y default: null. Compara la anotación de la propiedad generada con su tipo declarado y luego ejecuta las comprobaciones pertinentes de generación de modelos o la compilación de TypeScript; se considera terminado cuando las propiedades nullable aceptan null sin TS2322.