Revert "CI try without USE_DOCKER"

This reverts commit d52656c553.

.github/workflows/test.yaml

@@ -50,6 +50,8 @@ jobs:
           docker compose -f playwright-backend-docker-compose.yml -f playwright-backend-docker-compose.override.yml up -d
           docker ps
       - name: Run Playwright tests
+        env:
+          USE_DOCKER: 1
         run: yarn playwright test
       - uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
         if: ${{ !cancelled() }}