gfe-relnote: In QUIC, send connection close for all available encryption levels with TLS handshake. Protected by blocked gfe2_reloadable_flag_quic_enable_version_t*. Also false deprecate blocked gfe2_reloadable_flag_quic_close_all_encryptions_levels2. PiperOrigin-RevId: 294453534 Change-Id: I5537b4201e19c01fed3f48a923f28dfeab3ad991