Scenario acceptance_lip_on_rounded_rim enabled: the Lip on the enclosure's rounded rim works since #29's fix

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01RjGw4gA5ZvKrU8MQP6sBgT

crates/ui-egui/tests/scenarios/acceptance_lip_on_rounded_rim.json

@@ -1,7 +1,4 @@
 [
- {
-  "pending": "#29: Plastic Lip fails on a rounded (filleted) shelled rim"
- },
  {
   "note": "Acceptance (#27): a lip on the case's rounded rim with the Lip command."
  },