Update Joint gizmos automatically

editor/plugins/node_3d_editor_plugin.h

@@ -856,12 +856,11 @@ public:
 	static const int HIDDEN = 1;
 	static const int ON_TOP = 2;
 
-private:
+protected:
 	int current_state;
 	List<EditorNode3DGizmo *> current_gizmos;
 	HashMap<String, Vector<Ref<StandardMaterial3D>>> materials;
 
-protected:
 	static void _bind_methods();
 	virtual bool has_gizmo(Node3D *p_spatial);
 	virtual Ref<EditorNode3DGizmo> create_gizmo(Node3D *p_spatial);