Turn on plane_recognition_origin_after_axes

The fork places a recognized plane's origin after squaring its axes (0286682, in SMLIB_REV;
SmPlane.cpp:2836-2852 at 2fc375f), and solidcore#2004 brings the same behind this flag. It closes
sweeps/4305's Bad Gap and moves sweeps/5037 to SMLib's volume.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MNXLXkZLQ6T7TSi4wswcmk

crates/smlib/src/core.rs

@@ -251,6 +251,7 @@ pub(crate) fn fixes() -> UpstreamFixes {
     f.planar_path_profile_placement_statuses = true;
     f.fillet_trim_status = true;
     f.perspective_sphere_offsets = true;
+    f.plane_recognition_origin_after_axes = true;
     f
 }