add @rushstack/rush-schemas as a rush-sdk dependency so the IExperimentsJson re-export resolves

Agent-Logs-Url: https://github.com/microsoft/rushstack/sessions/83bb9e28-6062-4265-851a-ce82c95398ec

Co-authored-by: iclanton <5010588+iclanton@users.noreply.github.com>

Author: Copilot

common/config/subspaces/build-tests-subspace/pnpm-lock.yaml

@@ -1,6 +1,6 @@
 // DO NOT MODIFY THIS FILE MANUALLY BUT DO COMMIT IT. It is generated and used by Rush.
 {
-  "pnpmShrinkwrapHash": "0d3fa0f98a02504bf1f36a2cea15fadf76e1f0b9",
+  "pnpmShrinkwrapHash": "560bb998f1afda8ac0aa2d2087111c88f23bc845",
   "preferredVersionsHash": "550b4cee0bef4e97db6c6aad726df5149d20e7d9",
-  "packageJsonInjectedDependenciesHash": "cf6202674eee7a6015522eac2f64eaee1666ce39"
+  "packageJsonInjectedDependenciesHash": "3f7b5f1960e61c2a3d039187d38b51c9211f6b17"
 }

common/config/subspaces/build-tests-subspace/repo-state.json

@@ -47,6 +47,7 @@
     "@rushstack/lookup-by-path": "workspace:*",
     "@rushstack/node-core-library": "workspace:*",
     "@rushstack/package-deps-hash": "workspace:*",
+    "@rushstack/rush-schemas": "workspace:*",
     "@rushstack/terminal": "workspace:*",
     "tapable": "2.2.1"
   },