The RUDP loop caught only ValueError, so a subscribe frame with
`schemaIds: 5` raised TypeError in _handle_connection_message and ended the
thread for every peer. Any exception from handling one peer's messages now
ends that peer's session with a goodbye, as a refused packet does, and is
logged by its type alone: the error's message can quote what the peer sent.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>