Fix when it disappears when connecting an edge to update to a new node

[SeonghoJin]

I am using the drag-and-drop function and Edge Update function by applying it to my project, but EdgeUpdate sometimes does not work well.

When I checked, it was not included in the dependencies of the useCallback functions that use onEdgeUpdate.

The onEdgeUpdate function code I used is

const [elements, setElements] = useState<Elements>(initialElements);
const onEdgeUpdate = (oldEdge: Edge, newConnection: Connection) =>
    setElements(updateEdge(oldEdge, newConnection, elements));

I think it's better to use the onEdgeUpdate Code from Example, but I hope this code works as well.

Below is a picture of edgeUpdate not working

[moklick]

Thanks @SeonghoJin :)