preserve group toggling even in non-'grouped' traceorders
preserve group toggling even in non-'grouped' traceorders

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