XFEstudio/gpt4free

fix: handle missing "result" key in PuterJS response

- Modified `PuterJS.py` in the `g4f/Provider/needs_auth` directory. - In the `PuterJS` class, updated the handling of the `result` dictionary in the response. - Changed the assignment of `choice` to use `result.get("result", {})` instead of directly assigning `result`. - Ensured that `choice` is an empty dictionary if the `result` key is missing in the response.