`plotly_selected` is not triggered on selection changes because of legend events

Hello!

I am trying to perform lasso selection and want to show the number of points selected in the UI.

I can get the details of the points from plotly_selected event. But When I click on any legends that have associated points in the lasso region, then obviously the selection changes, but plotly_selected event is not triggered.

I have replicated this behavior in the codepen.

Please share your thoughts on this.

从链接的 CodePen 复现开始，跟踪图例点击如何改变套索选择并分发 Plotly 事件。确定相关的图例和选择事件入口点，然后验证通过图例更改选择会产生预期的 plotly_selected 通知，同时不会破坏现有的选择行为。