on neighbour does not match size of data on the current processor

Do not need need to know whether point is inside or outside.

dualCellSurfaceAllIntersections is expensive, so do a faster prefilter to
label vertices as being near a boundary before calling that function.
May need more tuning on the distance from a surface that constitutes
being near a boundary.

Correct bug where List was used instead of DynamicList.