Freehand strokes min_distance_hitbox should take into acount the curvature of the stroke.

[zarstensen]

Currently, the freehand strokes tries to limit the amount of capsule shapes for its hitbox by having a minimum required distance / size of a capsule, before a new one should be generated. The issue with this is that very curvy parts of the stroke will not have enough capsule shapes to represent it, whereas straight parts have way too many capsule shapes to represent what is essentially just a straight line.
It would instead be better to multiply this minimum distance by the curvature of the stroke and use this as the actual minimum distance between points.