Python SDK: unable to create user due to http status code validation

[Relecto]

Preflight Checklist

• I have searched the issue tracker for an issue that matches the one I want to file, without success.
• I am not looking for support or already pursued the available support channels without success.

OpenMeter Version

cloud

Expected Behavior

The following code must create a customer and return it.

  om_customer = await om_client.create_customer({
      "key": str(user['_id']),
      "name": user_doc["username"],
      "description": "created by api",
      "usageAttribution": {
          "subjectKeys": [
              str(acc["_id"])
          ]
      },
      "currency": "EUR"
  })

Actual Behavior

Customer is created, but the create_customer() call raises an exception:

  File "/home/me/project/.venv/lib/python3.12/site-packages/uvicorn/protocols/http/httptools_impl.py", line 409, in run_asgi
    result = await app(  # type: ignore[func-returns-value]
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/me/project/.venv/lib/python3.12/site-packages/uvicorn/middleware/proxy_headers.py", line 60, in __call__
    return await self.app(scope, receive, send)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/me/project/.venv/lib/python3.12/site-packages/fastapi/applications.py", line 1054, in __call__
    await super().__call__(scope, receive, send)
  File "/home/me/project/.venv/lib/python3.12/site-packages/starlette/applications.py", line 112, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/me/project/.venv/lib/python3.12/site-packages/starlette/middleware/errors.py", line 187, in __call__
    raise exc
  File "/home/me/project/.venv/lib/python3.12/site-packages/starlette/middleware/errors.py", line 165, in __call__
    await self.app(scope, receive, _send)
  File "/home/me/project/.venv/lib/python3.12/site-packages/starlette/middleware/cors.py", line 85, in __call__
    await self.app(scope, receive, send)
  File "/home/me/project/.venv/lib/python3.12/site-packages/starlette/middleware/exceptions.py", line 62, in __call__
    await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send)
  File "/home/me/project/.venv/lib/python3.12/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    raise exc
  File "/home/me/project/.venv/lib/python3.12/site-packages/starlette/_exception_handler.py", line 42, in wrapped_app
    await app(scope, receive, sender)
  File "/home/me/project/.venv/lib/python3.12/site-packages/starlette/routing.py", line 714, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/me/project/.venv/lib/python3.12/site-packages/starlette/routing.py", line 734, in app
    await route.handle(scope, receive, send)
  File "/home/me/project/.venv/lib/python3.12/site-packages/starlette/routing.py", line 288, in handle
    await self.app(scope, receive, send)
  File "/home/me/project/.venv/lib/python3.12/site-packages/starlette/routing.py", line 76, in app
    await wrap_app_handling_exceptions(app, request)(scope, receive, send)
  File "/home/me/project/.venv/lib/python3.12/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    raise exc
  File "/home/me/project/.venv/lib/python3.12/site-packages/starlette/_exception_handler.py", line 42, in wrapped_app
    await app(scope, receive, sender)
  File "/home/me/project/.venv/lib/python3.12/site-packages/starlette/routing.py", line 73, in app
    response = await f(request)
               ^^^^^^^^^^^^^^^^
  File "/home/me/project/.venv/lib/python3.12/site-packages/fastapi/routing.py", line 301, in app
    raw_response = await run_endpoint_function(
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/me/project/.venv/lib/python3.12/site-packages/fastapi/routing.py", line 212, in run_endpoint_function
    return await dependant.call(**values)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/me/project/src/api/users/routes.py", line 123, in create_user
    om_customer = await om_client.create_customer({
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/me/project/.venv/lib/python3.12/site-packages/azure/core/tracing/decorator_async.py", line 119, in wrapper_use_tracer
    return await func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/me/project/.venv/lib/python3.12/site-packages/openmeter/aio/_operations/_operations.py", line 426, in create_customer
    raise HttpResponseError(response=response)
azure.core.exceptions.HttpResponseError: Operation returned an invalid status 'Created'

Inspecting the code, it seems like the API returns 201, but the sdk expects a 200.
https://github.com/openmeterio/openmeter/blob/main/api/client/python/src/openmeter/_operations/_operations.py#L1697

        if response.status_code not in [200]:
            if _stream:
                response.read()  # Load the body in memory and close the socket
            map_error(status_code=response.status_code, response=response, error_map=error_map)  # type: ignore
            raise HttpResponseError(response=response)

Steps To Reproduce

1. Install python SDK openmeter~=1.0.0b188
2. try to create a customer, similar to the code provided earlier

Additional Information

Please consider opensourcing/documenting the API generation process.
It was also requested in #3035