fix: remove duplicate paragraph and revert cron in firewall-issue-dispatcher (#1913)

* Initial plan

* fix: apply review comment fixes to firewall-issue-dispatcher

Agent-Logs-Url: https://github.com/github/gh-aw-firewall/sessions/f2ba5221-c9a5-44b2-aeb6-adaaa3c1e48e

Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com>

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com>
Co-authored-by: Landon Cox <landon.cox@microsoft.com>

Author: Copilot