Allow agentic-wiki-writer Step 2c PRs for .github/agentic-wiki/** protected-path writes (#326)

* Initial plan

* Initial plan

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Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>

* Fix agentic wiki writer protected-path PR config

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Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>

Author: Copilot

workflows/agentic-wiki-writer.md

@@ -49,7 +49,9 @@ safe-outputs:
   create-pull-request:
     title-prefix: "[agentic-wiki]"
     labels: [documentation, automated]
-    protected-files: fallback-to-issue
+    allowed-files:
+      - ".github/agentic-wiki/**"
+    protected-files: allowed
   jobs:
     push-wiki:
       description: >