Investigate relayout & react + axis constraints behavior

[etpinard]

In PR #2527, a few oddities with relayout on graphs with axis constraints (i.e. (x|y)axis.constrain: 'range' || 'domain') were detected.

From #2527 (comment) and below, tests coverage was deemed inadequate to assume anything about the current behavior. The first step would be to beef up the coverage there. Next, determine whether or not graphs with axis constraints do need to go though the editType calc on axis range relayouts. Finally, we should lock down the limitations (if any) of editType axrange for graphs with axis constraints.

cc @alexcjohnson

[etpinard]

Found a bug in https://codepen.io/etpinard/pen/qYopzp

introduced in 1.36.0 (probably from PR #2527) where the y-axis is getting re-position properly. This should be a good starting point for this ticket here.

[etpinard]

PR #2628 fixed the 🪲 reported above in #2540 (comment), but many issues remain.

Pasting #2628 (comment) here:

A few more comments on constrained axes, that should be followed up in #2540:

• Could making range relayout go through editType "plot" (instead of "calc") be sufficient? When replacing this line

plotly.js/src/plot_api/plot_api.js

Line 2039 in a132b85

flags.calc = true;

with flags.plot = true, no tests are failing.

• I think Plotly.react is broken with constrained axes. I'm not sure if it's always been broken or if the recently-added "axrange" edit did it 😕

and @alexcjohnson 's #2628 (comment)

Could making range relayout go through editType "plot" (instead of "calc") be sufficient?

Do we have a test of setting mutually-exclusive range values, as per the comment on that line? If we do, and the result correctly fixes them for the constraints, then go for it!

[gvwilson]

Hi - this issue has been sitting for a while, so as part of our effort to tidy up our public repositories I'm going to close it. If it's still a concern, we'd be grateful if you could open a new issue (with a short reproducible example if appropriate) so that we can add it to our stack. Cheers - @gvwilson