Fix formatting of QUIC IETF draft version Before this change, ParsedQuicVersionToString(ParsedQuicVersion::Draft29()) would return "ff00001d". Now it'll return "draft29" (once the flag is true). This makes looking at logs and test results easier. Change log formatting, protected by gfe2_reloadable_flag_quic_fix_print_draft_version PiperOrigin-RevId: 321610955 Change-Id: I1351eca818aa85cc5be12d8f4981521dfa3f98e0