revert form of rangeslider relayout call (but it's still _guiRelayout)

so the event data still has {range: [min, max]} not {range[0]: min, ...}
for backward compatibility. Note the latter form is no longer needed
for guiEdits to work consistently

Author: alexcjohnson

src/components/rangeslider/draw.js

@@ -286,10 +286,7 @@ function setDataRange(rangeSlider, gd, axisOpts, opts) {
         dataMax = clamp(opts.p2d(opts._pixelMax));
 
     window.requestAnimationFrame(function() {
-        var update = {};
-        update[axisOpts._name + '.range[0]'] = dataMin;
-        update[axisOpts._name + '.range[1]'] = dataMax;
-        Registry.call('_guiRelayout', gd, update);
+        Registry.call('_guiRelayout', gd, axisOpts._name + '.range', [dataMin, dataMax]);
     });
 }