Fix an issue where 2D contact was not working properly when there was a sharp corner against a flat segment.
Fix an issue where 2D contact was not working properly when there was a sharp corner against a flat segment.

rserban/chrono,Milad-Rakhsha/chrono,Milad-Rakhsha/chrono,Milad-Rakhsha/chrono,rserban/chrono,projectchrono/chrono,projectchrono/chrono,projectchrono/chrono,projectchrono/chrono,dariomangoni/chrono,projectchrono/chrono,rserban/chrono,dariomangoni/chrono,rserban/chrono,dariomangoni/chrono,rserban/chrono,Milad-Rakhsha/chrono,dariomangoni/chrono,rserban/chrono,Milad-Rakhsha/chrono,rserban/chrono,dariomangoni/chrono,Milad-Rakhsha/chrono,dariomangoni/chrono,projectchrono/chrono