Event Handlers Don't Update

I'm using 2.3.0 and noticed that the code doesn't account for an event handler prop changing. So, for instance, if I have a component with:

const MyComponent = ({ someCallback }) => (
   <Plot
     data={data}
     onRelayout={someCallback}
   />
);

The someCallback that is called is the first one. Here's a Codepen reproducing:

https://codepen.io/gonzofish/pen/OevOjx

To see it in action, just click autoscale on the chart and you'll see the message change to "Callback 1 Reporting In". If you change the callback by clicking "Change to 2" and then clicking autoscale again, the message doesn't change, despite the callback being changed.

I believe the issues stems from syncEventHandlers only account for two modes: (1) the handler isn't already set but has been provided as a prop and (2) the handler was set but the prop is not longer there. That starts at:

https://github.com/plotly/react-plotly.js/blob/master/src/factory.js#L212

Bắt đầu trong src/factory.js quanh dòng 212, nơi syncEventHandlers xử lý các prop của sự kiện plot, và sử dụng bản tái hiện CodePen được liên kết để quan sát thay đổi của callback. Được xem là hoàn tất khi việc thay đổi prop onRelayout khiến sự kiện autoscale tiếp theo gọi callback mới thay vì callback ban đầu.