1cd69220ef only disabled snapping the
aforementioned nodes to distance grid for already-placed sliders.
`SliderPlacementBlueprint` has its own logic for placement, so the fix
needs to be mirrored there too.
Seems to have had no consequence due to the way
`AutomaticBankAssignment` works (that flag is checked in
`PlacementBlueprint.UpdateTimeAndPosition()`, which runs essentially
every frame), but let's avoid putting it there at all ever.