Error in saddle connection search

[saraedum]

The following does not produce any saddle connections but raises an exception.

sage: from flatsurf import translation_surfaces
sage: S = translation_surfaces.cathedral(1, 2)
sage: S.saddle_connections(1)
ValueError: Singular point with vector pointing away from polygon

This is not related to any recent changes. I went back to sage-flatsurf 0.2.0. The problem is already present there.

[saraedum]

We can handle collinear points in polygons in other examples, e.g., this one works:

sage: translation_surfaces.square_torus().subdivide_edges(3).saddle_connections(10)