Browsers routinely abort media (video seek/scrub) and SSE connections
mid-response, which surfaced as BrokenPipeError/ConnectionResetError
tracebacks spamming the terminal. Swallow these in the request handler's
handle_one_request() and finish() so they're ignored cleanly.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>