test: accept V38 protocol canon posture

Extend the package boundary test canon map for promoted V38 and draft V39 so the protocol package test suite tracks the current active pointer.

Validated with the targeted protocol package boundary test, full @bitcode/protocol test suite, and diff hygiene.

Author: geraldarthurdavis

packages/protocol/test/protocol-package-boundary.test.js

@@ -57,6 +57,7 @@ test('@bitcode/protocol commercial formalization exports package-native canon he
     V35: { activeCanon: 'V35', draftTarget: 'V36' },
     V36: { activeCanon: 'V36', draftTarget: 'V37' },
     V37: { activeCanon: 'V37', draftTarget: 'V38' },
+    V38: { activeCanon: 'V38', draftTarget: 'V39' },
   };
   const expectedPosture = expectedPostureByPointer[pointer];