handle hover-only showtick{pre,suf}fix case
handle hover-only showtick{pre,suf}fix case

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