Fix wrapped horizontal legends height computations

[etpinard]

fixes#3175

@Braintelligence off this branch, the two codepens from #3175 (comment), now look like:

• https://codepen.io/etpinard/pen/YdbMOa?editors=1010
• https://codepen.io/etpinard/pen/jXoReN

which appear 👌 to my 👀

cc @plotly/plotly_js

[antoinerg]

It does look good to my 👀 too! Thanks for the fix @etpinard and @Braintelligence.

💃

[Braintelligence]

@antoinerg I didn't do anything :p all kudos to master @etpinard

[Braintelligence]

@etpinard I'm gonna use the intermediary plotly.min.js you've created forfrom the codepen until a release containing the fix is available if that's alright with you 😸.

[etpinard]

until a release containing the fix is available if that's alright with you

1.44.0 should be released today or tomorrow.