fec3d96acc
fix #21357 error message problem Github issue and discussion: https://github.com/FreeCAD/FreeCAD/issues/21357 https://github.com/FreeCAD/FreeCAD/issues/21357#issuecomment-2886010914 ArchWall return error when Base Sketch has external(projected) geometry. External projected geometry has TNP-problem, until the feature is TNP-tolerant, support of external(projected) geometry at ArchWall is not encouraged. The reported error message is fixed in the meantime in this PR.