This cone trace with `sizemode: 'absolute'` punches through scene wall

[etpinard]

See https://codepen.io/etpinard/pen/mKEoro?editors=0010

this should not happen. Something must be wrong with how we add autorange pads here for sizemode: 'absolute':

plotly.js/src/traces/cone/convert.js

Lines 111 to 113 in ece927f

	// stash autorange pad value
	trace._pad = anchor2coneSpan[trace.anchor] * meshData.vectorScale * trace.sizeref;
	if(trace.sizemode === 'scaled') trace._pad *= trace._normMax;