Fix the label-on-approval workflow

.github/workflows/add-label-after-approved.yml

@@ -0,0 +1,24 @@
+name: Add label after PR approved
+
+on:
+  pull_request_review:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  label-after-approved:
+    if: github.event.review.state == 'approved' && !contains(github.event.pull_request.labels.*.name, 'extended-tests')
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+    steps:
+      - name: Add label
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GH_REPO: ${{ github.repository }}
+          NUMBER: ${{ github.event.pull_request.number }}
+        run: |
+          echo "Adding label 'extended-tests' to PR $NUMBER"
+          gh pr edit "$NUMBER" --add-label "extended-tests" || (echo "Failed to add label" && exit 1)