Voronoi with bounds fail sometimes at boolean intersection

[DanielAbalde]

PowerDiagrams/Delaunay2d.cs

Line 3272 in 3217ca4

var ints = Curve.CreateBooleanIntersection(cell.ToNurbsCurve(), bounds.ToNurbsCurve(), Utils.RhinoTolerance);

it returns empty intersections sometimes due to the lack of planarize cell curve with the input plane, resulting in null cells.

Due this method belongs to the Vertex class and the Plane property belongs to Delaunay2d class, the planarize transformation must to be done before calling the method, but the vertices of the cell are in the method context. So, consider setting a plane type argument if it does not have serious consequences.