[RFR] Convert DragPreview component to useStyles

[jaytula]

This is a conversion to useStyles but it is the first that I've done that has life-cycle method shouldComponentUpdate that just returns false.

I did not try to add any memoization because I wouldn't really be understanding whether it worked. Would very much appreciate an explanation how shouldComponentUpdate for this seemingly trivial case should be handled.

Thanks!

[djhi]

You can wrap it inside a React.memo: https://reactjs.org/docs/react-api.html#reactmemo

[jaytula]

Thanks! Would something like this be the right idea for this particular component?

export default React.memo(DragPreview, () => true);

[djhi]

👍