extension_rollout: Fix workflow file path (#51273)

Release Notes:

- N/A

.github/workflows/extension_workflow_rollout.yml

@@ -159,9 +159,9 @@ jobs:
         cd - > /dev/null
 
         if [ "$MATRIX_REPO" = "workflows" ]; then
-            cp workflow-files/extensions/workflows/*.yml extension/.github/workflows/
+            cp workflow-files/*.yml extension/.github/workflows/
         else
-            cp workflow-files/extensions/workflows/shared/*.yml extension/.github/workflows/
+            cp workflow-files/shared/*.yml extension/.github/workflows/
         fi
       env:
         REMOVED_CI: ${{ needs.fetch_extension_repos.outputs.removed_ci }}