Clicking a pinned element should unpin it

[mootari]

Users can sticky a pointer selection by clicking. However, to unsticky it again they have to click outside the currently rendered mark elements:

plot/src/interactions/pointer.js

Line 167 in 90a5689

if (state.sticky && state.roots.some((r) => r?.contains(event.target))) return; // stay sticky

I frequently find myself stumbling over this behavior since I intuitively treat pinning as a toggle. If technically feasible I believe it would be preferable if any click, even on the mark itself, would unpin the selection.

Is the current implementation meant to handle cases where a user interacts with the pinned mark, like clicking a link or selecting text?

[Fil]

related #1832 #2298