Disconnect item_rect_changed when removing a child of GraphEdit

scene/gui/graph_edit.cpp

@@ -262,6 +262,7 @@ void GraphEdit::remove_child_notify(Node *p_child) {
 	if (gn) {
 		gn->disconnect("offset_changed", callable_mp(this, &GraphEdit::_graph_node_moved));
 		gn->disconnect("raise_request", callable_mp(this, &GraphEdit::_graph_node_raised));
+		gn->disconnect("item_rect_changed", callable_mp((CanvasItem *)connections_layer, &CanvasItem::update));
 	}
 }