How to draw mesh lines in front of mesh faces?

I'm trying to figure out how to to draw lines in the viewport such that they are in front of faces that are drawn there. Right now I'm getting a lot of Z fighting.

The object I'm trying to draw consists of two meshes. One is a regular mesh exported from blender. The other is the same mesh, but only the wireframe of the quads. I want the wireframe to appear in front of the faces, but I can't simply disable the depth draw on the wireframe mesh because I still want the mesh to occlude the wire frame edges that are away from the camera.

In OpenGL this is accomplished using the glPolygonOffset command. Godot does not have a command like this - but might I be able to do something similar with a shader?
https://stackoverflow.com/questions/60560899/draw-lines-above-faces