snappyHexMesh does not inherit patch/zone info from remote patch faces

Summary

snappyHexMesh when adding layers checks the surrounding faces for patch/zone information. It does not check any remote-but-edge-connected faces. This occasionally shows up when patches stop at the processor interface.

Steps to reproduce

Run attached case in v1912 and see the difference between non-parallel and parallel extrusion. The case has been specifically set up to have the layer-extrusion end coincide with the processor interface.

Environment information

• OpenFOAM version : v1912