test(objectql): give the publish double's engine the draft-row read

A publish that states no package now reads the pending draft row's package
binding once, so the seed self-apply double's engine answers that read
(no row) and the repository double answers the rest, as before.

Claude-Session: https://claude.ai/code/session_018zT8d8NpiQ1ExhuNd5TxY6
Co-authored-by: Claude <noreply@anthropic.com>

Author: claude

packages/objectql/src/protocol-publish-package-drafts.test.ts

@@ -452,7 +452,11 @@ describe('protocol.publishPackageDrafts (ADR-0033 / ADR-0067 D2)', () => {
  */
 describe('protocol.publishMetaItem — seed self-apply', () => {
   function makePublishable(body: unknown) {
-    const protocol = new ObjectStackProtocolImplementation({} as never);
+    // A publish that states no package reads the pending draft row's package
+    // binding once (`engine.findOne` on `sys_metadata`) so the gate and the
+    // promotion resolve one draft (ADR-0048). No row here: the binding stays
+    // unstated and the repository double below answers both reads.
+    const protocol = new ObjectStackProtocolImplementation({ findOne: async () => null } as never);
     (protocol as any).ensureOverlayIndex = async () => {};
     // [#21694] No lock on these items. Stubbed at `lockWriteRefusal`, the
     // verdict the publish path asks (`promoteDraftForPublish`, since #8594),