Fix unit tests

Author: timfish

.github/workflows/checks.yml

@@ -118,6 +118,11 @@ jobs:
       - name: Install dependencies
         run: yarn --frozen-lockfile --ignore-engines
         if: steps.dependency-cache.outputs.cache-hit != 'true'
+      - name: Download build artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: dist-artifacts-${{ github.run_id }}
+          path: packages
       - run: yarn test:unit
 
   test-integration: