Schelling point eval doesn't work

[johny-b]

Fresh installation (d3dc890)

oaieval gpt-3.5-turbo schelling_point

dies around 580th sample with

(...)
openai.BadRequestError: Error code: 400 - {'error': {'message': "Sorry! We've encountered an issue with repetitive patterns in your prompt. Please try again with a different prompt.", 'type': 'invalid_prompt', 'param': 'prompt', 'code': None}}

I guess some prompt was accepted by the OpenAI API when the eval was developed and now it's rejected.

[JunShern]

Thanks for flagging! #1534 has a fix, which should get merged soon.