gfe-relnote: In QUIC, remove largest_sent_packets_ from unacked_packet_map. This only affects QUIC versions with TLS handshake. Protected by disabled gfe2_reloadable_flag_quic_enable_version_t* flags. PiperOrigin-RevId: 291934571 Change-Id: Ifc0a73a9db508e9938dc14b40e76cc3fe00315c7