chore(scripts): ENDPOINT_NOT_FOUND leaves the unpinned error-status baseline; the share-link catch-all now declares its 404 (#24024)

Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BVm1pAXVXQ3PjC42j1kPFf

Author: claude

scripts/error-status-unpinned-baseline.json

@@ -4,7 +4,6 @@
     "CONCURRENT_MODIFICATION",
     "DUPLICATE_VALUE",
     "EMAIL_NOT_VERIFIED",
-    "ENDPOINT_NOT_FOUND",
     "EXPIRED_TOKEN",
     "FIELD_NOT_ACCESSIBLE",
     "FIELD_NOT_FOUND",