If they didn't and just cloned her voice, it's more disregard for creators and artists than I would have thought possible. What were they thinking?
Edit after reading the official story... not sure I believe it, seems disingenuous, at best they chose someone because they really really sounded like Scarlett Johansson, and no one said, it might be a problem.
https://openai.com/index/how-the-voices-for-chatgpt-were-cho...