Data order is not applied by React when using matching axes

[archmoj]

Originally reported in plotly/dash#1163.
MINIMAL DEMO

[archmoj]

Not clear how we could bypass _categories here?

plotly.js/src/lib/relink_private.js

Line 30 in d37895b

if(k.charAt(0) === '_' || typeof fromVal === 'function') {

[archmoj]

It may be best to use re-direct to newPlot from react when there are category axes matches one another.

[alexcjohnson]

We can't do newPlot - both for performance reasons and for uirevision

Normally it looks like we clear _categories in ax.clearCalc, and there's even logic in there that looks like it's supposed to apply to linked axes... why isn't that working?