ci: Fix DNM action

The action fails even when there is no DNM label.

Signed-off-by: Chaitanya Tata <[email protected]>

Author: krish2718

.github/workflows/dnm.yml

@@ -6,11 +6,22 @@ on:
 
 jobs:
   do-not-merge:
-    if: ${{ contains(github.event.*.labels.*.name, 'DNM') }}
     name: Prevent Merging
     runs-on: ubuntu-24.04
     steps:
-      - name: Check for label
+      - name: Check for DNM label
+        uses: actions/github-script@60a0d83039c725a5ff217e4aa4b5cc5170e1c8d7 # v7.0.1
+        id: check-label
+        with:
+          script: |
+            const labels = context.payload.pull_request.labels || [];
+            const labelNames = labels.map(l => l.name);
+            const hasDnm = labelNames.includes('DNM');
+            core.setOutput('has_dnm', hasDnm);
+            return hasDnm;
+
+      - name: Fail if DNM label exists
+        if: steps.check-label.outputs.has_dnm == 'true'
         run: |
           echo "Pull request is labeled as 'DNM'"
           echo "This workflow fails so that the pull request cannot be merged"