Feature request: click to deselect traits in traitline

[marcustyphoon]

It would be nice if clicking on a selected trait in a traitline deselected it; currently there is no way to go back to a completely unselected traitline.

[gw2princeps]

You can add the props resettable to <TraitLine /> which does kind of what you want. See https://manuelhaag.github.io/gw2-ui/?path=/story/core-components--traitline