Ternary plot missing `automargin` option in `layout.ternary`

Currently the Ternary plot: https://plotly.com/javascript/ternary-plots/
doesn't have automargin option in each axis in the layout.ternary: https://plotly.com/javascript/reference/layout/ternary/

Therefore, it may happen that the title of the axis is cropped, not only in the case of long titles, but more often due to smaller screen sizes (or figure sizes).

This is more likely for the title text in axes B and C located in the bottom being cropped, e.g.:

Titles are being cropped!

Demo example: https://codepen.io/Lexachoc/pen/MYgVGoW

The title in axis B has no margin to adjust the position and is therefore cropped.

It would be very helpful to add this option (or a similar one to achieve the same thing, avoiding the title text being cropped) to the ternary plot.

Commencez par la référence de layout.ternary et les exemples de graphiques ternaires associés, puis suivez la manière dont les titres des axes et les marges sont gérés. Le travail est terminé lorsque les axes ternaires exposent une option automargin ou un comportement équivalent et que les titres, en particulier sur les axes B et C, ne sont plus tronqués dans les petites figures.