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.Shared/Extension/EnumExtension.cs

@@ -165,7 +165,7 @@
    /// <returns></returns>
    public static string GetDescription(this object value)
    {
        if (value==null)
        if (value == null)
        {
            return null;
        }