MaterialNodeDrawer no longer uses MarkDirtyHack for time-dependent nodes, instead only re-painting

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/Drawer/MaterialNodeDrawer.cs

             var data = GetData<MaterialNodeDrawData>();
             NodeUtils.DepthFirstCollectNodesFromNode(childrenNodes, data.node);
             if (childrenNodes.OfType<IRequiresTime>().Any())
-                data.MarkDirtyHack();
+                this.Touch(ChangeType.Repaint);
             ListPool<INode>.Release(childrenNodes);
         }