129f79debe
Using the Knife tool, making cuts that split an edge exactly interpolate fine for vertex customdata (weights or attributes on the vertex domain) due to `BM_edge_split` taking care of data layers from the edge and vertex domain (also mdisps -- which unfortunately dont seem to work well, but that is for another patch...). However, making cuts _inside_ a face though dont interpolate at all (giving default values on new vertices). With this patch, also interpolate vertex customdata in `BM_face_split_edgenet`. Pull Request: https://projects.blender.org/blender/blender/pulls/107367