Bug fix - do not display empty bars when line.width is zero

[archmoj]

Fixes#4047.
Empty bar and funnel rectangles should not be displayed when marker.line.width is set to zero.

Codepen after

Also addressing #4057 for bars in this PR.
Codepen after

@plotly/plotly_js

[etpinard]

Looks like this mock only has array marker.line.width value. Could you add one trace that test scaler marker.line.width?

Maybe you can leave this mock alone and simply add another mock using https://codepen.io/MojtabaSamimi/pen/bXbmba , so that we also test the relative-stacked case.

[etpinard]

Thanks for taking this one @archmoj - I made two minor comments.

[archmoj]

@etpinard Thanks for the review!
This is now ready for the second round.
As I updated the PR description please note that the #4057 is also addressed for bars.

[etpinard]

Bars don't have line.width, but still calling this getMarkerLineWidth would be better.

[etpinard]

I wonder what's faster

varhasFn=typeoffn==='function';for(vari=0;i<N;i++){arrayOut[i]=hasFn ? fn(arrayIn[i]) : arrayIn[i];}

or

fn=typeoffn==='function' ? fn : Lib.noop;for(vari=0;i<N;i++){arrayOut[i]=fn(arrayIn[i]);}

No need to change anything, I'm just thinking out-loud.

[archmoj]

Interesting question. And I like the minimalist version with Lib.noop!
That may depend on the browser.
Having two loops may also be fast.

vari=0;if(typeoffn==='function'){for(;i<N;++i)arrayOut[i]=fn(arrayIn[i]);}else{for(;i<N;++i)arrayOut[i]=arrayIn[i];}

[etpinard]

Nicely done 💃

Thanks for the fixes!