[Bug]: A problem found in the autogen.function_utils method

[znjt]

Describe the bug

function_utils.autogen. serialize_to_str(x: Any) -> str, if the parameter is list Chinese string, in the case of x meets Chinese, it will go to json.dumps(x), at this time, it will appear that the parameter x is ascii, instead of the original parameter value. For example, if x:["中文"], it will return: '["\\u4e2d\\u6587"]''
solution：json.dumps(x)->json.dumps(x,ensure_ascii=False)

Steps to reproduce

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Model Used

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Expected Behavior

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Screenshots and logs

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Additional Information

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[ekzhu]

Thanks for the issue. Can you submit a PR with your fix and add a unit test case for this?

[jtoy]

@znjt @ekzhu I have submitted a PR with tests for this!