front: technical debt pathfinding component

[anisometropie]

Description and goal

in ManageTrainScheduleV2, some major transformation on pathfinding data is delegated to sub components TypeAndPathV2.

launchPathFinding has much more responsibility than a mere (and small) subcomponent should have

I think that’s a design flaw and a case where props drilling is problematic. it creates major indirection: difficult to follow where to data comes from and what’s done to it.

This really could be a proper case to use a business hook (as proposed by @jacomyal @sim51)
to be discussed