ci: add workflow to block merging PRs with "status: blocked" label (#5955)

Author: mostafaNazari702

.github/workflows/blocked-pr.yml

@@ -0,0 +1,24 @@
+name: Blocked PR Check
+
+on:
+  pull_request:
+    branches:
+      - main
+    types: [opened, reopened, synchronize, labeled, unlabeled]
+
+permissions:
+  contents: read
+  pull-requests: read
+
+jobs:
+  not-blocked:
+    name: not-blocked
+    runs-on: ubuntu-latest
+    steps:
+      - name: 'Verify "status: blocked" label is not applied'
+        uses: mheap/github-action-required-labels@v5
+        with:
+          mode: exactly
+          count: 0
+          labels: "status: blocked"
+          message: "This PR has the 'status: blocked' label and cannot be merged until that label is removed."