Mesh in degenerate configuration is incorrectly separated into in inside-outside parts
Repro command: ./mesh_reconstruction -input_mesh=testinputs/degenerate/cube_12faces_horisontal.obj --num_grid_cells=20
Branch: separation_and_marching
Incorrectly labeled outside triangles. Expected that all of the triangles outside the complex cells are green. On the picture the whole left part should be green.
This causes incorrect deletion of several triangles.