collision with 1-pixel thick tiles is very buggy

[ncrecc]

take these clouds and angled lines from marhide (again):

this uses default tileset 187, so it's not the case of a user adding some weird custom content

[up-left]

Yknytt relies on Godot to convert images into collision polygons, but it requires some workarounds to work. I made some changes, so it should work better.