add test for sort transform side effects on eventData pointNumber
add test for sort transform side effects on eventData pointNumber

plotly/plotly.js,aburato/plotly.js,asolagmbh/plotly.js,asolagmbh/plotly.js,plotly/plotly.js,plotly/plotly.js,etpinard/plotly.js,iongroup/plotly.js,iongroup/plotly.js,plotly/plotly.js,asolagmbh/plotly.js,iongroup/plotly.js,etpinard/plotly.js,aburato/plotly.js,etpinard/plotly.js