Check indices with CellSetExtrude reverse look up
Previously, the check for visit points with cells for `CellSetExtrude` only looked at the count of incident cells. This expands the check to make sure that it actually returns the expected cells.
Previously, the check for visit points with cells for `CellSetExtrude` only looked at the count of incident cells. This expands the check to make sure that it actually returns the expected cells.