Enable log output for lock stale issues workflow

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Co-Authored-By: Claude <noreply@anthropic.com>

.github/workflows/lock-closed-issues.yml

@@ -20,6 +20,7 @@ jobs:
         with:
           issue-inactive-days: "7"
           process-only: "issues"
+          log-output: true
           issue-comment: >
             This issue has been automatically locked since it was
             closed and has not had any activity for 7 days.