fix:订单完成时间赋值存在bug，只有在已完成或已退款时赋值

sunpengfei

2025-06-06 a60c9afc1efed7f5a7eeaa673fa915ab79a775a8

 LifePayment/LifePayment.Domain/WeChat/WxClient.cs

@@ -40,7 +40,7 @@
            return result;
        }

        public async Task<TResult> RefundsPostAsync<TInput, TResult>(TInput input, string function)
        public async Task<TResult> NomalPostAsync<TInput, TResult>(TInput input, string function)
        {
            var client = HttpClientFactory.CreateClient(LifePaymentConstant.WxPayHttpClientName);
            var body = JsonConvert.SerializeObject(input);