Add back value changed callback + notify node changed when parameter is modified

Author: Antoine Lelievre

Assets/com.alelievr.NodeGraphProcessor/Editor/Views/BaseNodeView.cs

@@ -854,6 +854,8 @@ protected VisualElement AddControlField(FieldInfo field, string label = null, bo
 
 			element.RegisterValueChangeCallback(e => {
 				UpdateFieldVisibility(field.Name, field.GetValue(nodeTarget));
+				valueChangedCallback?.Invoke();
+				NotifyNodeChanged();
 			});
 
 			// Disallow picking scene objects when the graph is not linked to a scene