Signal error if Insert Count Increment causes overflow. gfe-relnote: n/a, change to QUIC v99-only code. Protected by existing disabled gfe2_reloadable_flag_quic_enable_version_99. PiperOrigin-RevId: 274830568 Change-Id: Ic9e7fa84e04808d2c7bade54ed3670b53b5bb0f6