Add `counts` attribute to parcats_hovermode_dimension mock
Add `counts` attribute to parcats_hovermode_dimension mock

Makes the hoverlabel shifting logic more noticeable and shows off
the `counts` attribute

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