Allow access data on the `plotly_doubleclick` event

[Lexachoc]

The double click event will trigger the single click event as well as reported in #1546. But the issue has been closed.

Here's the example showing the issue:
https://codepen.io/Lexachoc/pen/qEWZJxb

Only the single click event plotly_click can access the data.

There are usecases to access the data points on double click e.g., in plotly/react-plotly.js#257.

It would be nice to allow access the data also on double click. And maybe also to avoid triggering a single-click event. (which will solve the issue report in #1546)

[Lexachoc]

I managed to implement this feature.

But since the double-click event is applied to the whole plot(?), the first response is null, which is fine since I can access the data from the second response.
I reused the plotly_click event, and trigger the second plotly_doubleclick manually, that's why only the second response has point data available.

There's still an issue that the double click on points will force the plot to reset zoom. So I have to prevent the zoom reset if there's hover data.

I would like to hear what the Plotly team thinks about whether or not to add support for accessing data by double-clicking on points. (Of course, don't trigger zoom reset.)

Below is a usecase, double click on the points to show popup information of point (I use a toast for example):