ChatCompletionResponse.Created r string type

[dragonTalon]

I found that the format created returned by some models is of type String
So i think created must support compatibility between int64 and string formats

{
    "id": "",
    "created": "2025/05/16 16:29:57",
    "model": null,
    "object": "chat.completion",
    "system_fingerprint": null,
    "choices": [
        {
            "finish_reason": "stop",
            "index": 0,
            "message": {
                "content": "....",
                "role": "assistant",
                "tool_calls": null,
                "function_call": null
            }
        }
    ],
    "usage": {
  
    },
    "service_tier": null,
    "code": 0,
    "error_message": ""
}