chore: register the new pinned engine double for the locale-producer test

Author: claude

scripts/engine-double-contract.pinned.json

@@ -3321,6 +3321,11 @@
       "verb": "findOne",
       "pinned": 1
     },
+    {
+      "file": "packages/runtime/src/app-plugin.seed-locale-producer.test.ts",
+      "verb": "findOne",
+      "pinned": 1
+    },
     {
       "file": "packages/runtime/src/domains/meta-published-runtime-publish.test.ts",
       "verb": "delete",