explicitly assert that _scrollZoom.cartesian isn't set
explicitly assert that _scrollZoom.cartesian isn't set

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