macOS HttpListener timing

Workflow runs for macOS HttpListener timing

• scratch: test /etc/hosts variants against the 5s mDNS lookup

  failed:
  macOS HttpListener timing#3:Commit3dc9b4dpushedbynickna
  scratch/macos-hosts-variants

  Jun 10, 20261m 15s
  More actions for workflow run 3

• scratch: isolate ctor/add/start phases + mDNS hostname theory

  completed successfully:
  macOS HttpListener timing#2:Commitf64c400pushedbynickna
  scratch/macos-httplistener-timing

  Jun 10, 20261m 5s
  More actions for workflow run 2

• scratch: time HttpListener phases on macOS vs Ubuntu

  completed successfully:
  macOS HttpListener timing#1:Commit8b2fdbdpushedbynickna
  scratch/macos-httplistener-timing

  Jun 10, 20261m 6s
  More actions for workflow run 1