fix: only run PR comment workflow on open PRs

The PR comment workflow was running on all PR comments, including those on closed PRs.
Added a condition to check github.event.issue.state to ensure the workflow only runs
when the PR is open.

.github/workflows/pr-comment-cpe.yml

@@ -7,8 +7,8 @@ on:
 
 jobs:
   cpe-process-comment:
-    # Only run on PR comments
-    if: github.event.issue.pull_request
+    # Only run on PR comments and if PR is open
+    if: ${{ github.event.issue.pull_request && github.event.issue.state == 'open' }}
     runs-on: ubuntu-latest
     permissions: write-all
     steps: