Use mac intel runner for mac-x64 tests

.github/workflows/build.yml

@@ -113,7 +113,7 @@ jobs:
     needs: checkout-macos
     with:
       build-runs-on: macos-14-xlarge
-      test-runs-on: macos-14-xlarge
+      test-runs-on: macos-14
       target-platform: macos
       target-arch: x64
       is-release: false