[BUG] NestJS - withInterfaces flag being ignored

Bug Report Checklist

[ ] Have you provided a full/minimal spec to reproduce the issue?
[x] Have you validated the input using an OpenAPI validator (example)?
[x] Have you tested with the latest master to confirm the issue still exists?
[x] Have you searched for related issues/PRs?
[x] What's the actual output vs expected output?
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Description

My understanding of the NestJS OpenAPI Generator docs is that by not including the withInterfaces flag, I should expect models to instead be generated as classes.

Removing or setting this flag to false continues to output interfaces in typescript.

openapi-generator version

7.2

OpenAPI declaration file content or url

https://openapi-generator.tech/docs/generators/typescript-nestjs/#:~:text=false-,withInterfaces,-Setting%20this%20property

Generation Details

Language set to typescript-nestjs (by default this should set withInterfaces to false)

Steps to reproduce

Run npx @openapitools/openapi-generator-cli generate -i <location-of-openapi-spec> -g typescript-nestjs -o <your-output-dir>

Example OpenAPI spec

{
  "openapi": "3.0.0",
  "info": {
    "title": "Dummy API",
    "description": "Dummy",
    "version": "0"
  },
  "paths": {},
  "components": {
    "schemas": {
      "DummyClass": {
        "type": "object",
        "properties": {
          "propertyOne": {
            "type": "string"
          },
          "propertyTwo": {
            "type": "string",
            "format": "uuid"
          }
        },
        "required": ["propertyOne", "propertyTwo"]
      }
    }
  }
}

I would expect the file dummyClass.ts to have a class within it, but instead it has an interface.

I am aware that the nestjs generator is considered experimental, but I had thought I'd seen this working previously, though I can't confirm.

OpenAPITools / openapi-generator