Fix precision of EdgIntQad and DisVerTri

[jeromerobert]

Dear Loic,

Please find those 2 fixes we found by projecting random (fuzzing) points on a z=0 disk containing some almost degenerated triangles.

I hope I didn't miss something about the usefulness of the barycentric coordinate test. If I did, I hope you could explain it to me.

Jerome

[LoicMarechal]

Hi Jerome, thanks for your bug correction. I will have some free time to check and validate it by the end of June. Best regards, Loïc