Ensure sort is reversible when adding a new node

Bonsai.Editor/GraphModel/WorkflowEditor.cs

@@ -1209,7 +1209,7 @@ void ConfigureWorkflowBuilder(
                     _ => false
                 }));
 
-            var reorder = GetSimpleSort();
+            var reorder = GetReversibleSort();
             var updateGraphLayout = CreateUpdateGraphLayoutDelegate();
             var updateSelectedNode = CreateUpdateSelectionDelegate(builder);
             var insertCommands = GetInsertGraphNodeCommands(inspectNode, inspectNode, targetNodes, nodeType, branch, validateInsert);