Allow access data on the `plotly_doubleclick` event

The double click event will trigger the single click event as well as reported in https://github.com/plotly/plotly.js/issues/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 https://github.com/plotly/react-plotly.js/issues/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 https://github.com/plotly/plotly.js/issues/1546)

从链接的 CodePen 复现以及所引用的 plotly.js issue 1546 和 react-plotly.js issue 257 开始。跟踪 plotly_click 和 plotly_doubleclick 的分发方式，然后验证双击处理程序可以访问相关数据，并且预期的单击行为已经定义。完成的标准是，所请求的双击数据访问能够正常工作，并且交互行为已由测试覆盖。