[Bug]: tool_calls parsing error with CPU

[xuechendi]

Your current environment

The output of `python collect_env.py`

```text Your output of `python collect_env.py` here ```

🐛 Describe the bug

from openai import OpenAI

if __name__ == "__main__":

    model = "mistralai/Mistral-7B-Instruct-v0.3"
    llm = OpenAI(base_url="http://100.83.111.250:8000/v1", api_key="EMPTY")

    input = [{"role": "user", "content": "What's the weather like in Boston today?"}]
    tools = [{
        "type": "function",
        "function": {
            "name": "get_current_weather",
            "description": "Get the current weather in a given location",
            "parameters": {
                "type": "object",
                "properties": {
                "location": {
                    "type": "string",
                    "description": "The city and state, e.g. San Francisco, CA",
                },
                "unit": {"type": "string", "enum": ["celsius", "fahrenheit"]},
                },
                "required": ["location"],
            },
        }
    }]                   
    tool_choice = {'function': {'name': 'get_current_weather'}} 

    output = llm.chat.completions.create(
        model=model,
        messages=input,
        tools=tools,
        tool_choice=tool_choice,
        stream=False,
    )
    if content := output.choices[0].message.content:
        print('content:', content)
    elif tool_calls := output.choices[0].message.tool_calls:
        print('tool_calls:', tool_calls)

received output:

python test_openai_sdk.py 
tool_calls: [ChatCompletionMessageToolCall(id='chatcmpl-tool-a081c6fb632c4d7bbfd3ed00ac5a4399', function=Function(arguments='{ ', name='get_current_weather'), type='function')]

expected output

python test_openai_sdk.py 
tool_calls: [ChatCompletionMessageToolCall(id='chatcmpl-tool-b58a97994c5d4de7bc817a36dcf5e95d', function=Function(arguments='{ "location": "Boston, MA", "unit": "celsius" }', name='get_current_weather'), type='function')]

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