Fix bug in Closing command that caused incorrect list order due to abandoned changes

Author: CodingOctocat

IPConfig/ViewModels/IPConfigListViewModel.cs

@@ -419,6 +419,8 @@ where match.Success
 
         int order = FileOrderHelper.GetOrder(orders);
         var copy = original.DeepClone();
+        // Order 属性被标记为 [JsonIgnore]，需要手动赋值。
+        copy.Order = original.Order;
         copy.Name = $"{Lang.Copy_Noun}{order}-{original.Name}";
         copy.BeginEdit();
         InsertNewIPConfig(copy);

IPConfig/ViewModels/MainViewModel.cs

@@ -267,7 +267,14 @@ private void Closing(CancelEventArgs e)
             }
             else if (result == MessageBoxResult.No)
             {
-                Messenger.Send<CollectionChangeActionMessage<EditableIPConfigModel>>(new(this, CollectionChangeAction.Remove, item));
+                if (item.Order < 0)
+                {
+                    Messenger.Send<CollectionChangeActionMessage<EditableIPConfigModel>>(new(this, CollectionChangeAction.Remove, item));
+                }
+                else
+                {
+                    item.RejectChanges();
+                }
 
                 continue;
             }