use old undici and ES2022 target for act support (#678)

.github/workflows/test.yml

@@ -948,6 +948,21 @@ jobs:
       - name: Install python works
         run: uv python install
 
+  test-act:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        with:
+          persist-credentials: false
+      - name: Install act
+        run: gh extension install https://github.com/nektos/gh-act
+        env:
+          GH_TOKEN: ${{ github.token }}
+      - name: Run test-uvx with act
+        run: gh act -j test-uvx -P ubuntu-latest=catthehacker/ubuntu:act-latest
+        env:
+          GH_TOKEN: ${{ github.token }}
+
   all-tests-passed:
     runs-on: ubuntu-latest
     needs:
@@ -993,6 +1008,7 @@ jobs:
       - test-cache-python-installs
       - test-restore-python-installs
       - test-python-install-dir
+      - test-act
     if: always()
     steps:
       - name: All tests passed