配置openGauss md5sha256认证方式不生效

【标题描述】: 【测试类型：安全】【测试版本：(openGauss-lite 5.0.3 build 89d144c2) compiled at 2024-07-31 21:39:16 commit 0 last mr release】 问题描述 配置openGauss md5sha256认证方式不生效 【操作系统和硬件信息】(查询命令: cat /etc/system-release, uname -a): Huawei Cloud EulerOS release 2.0 (West Lake) 【测试环境】(单机/1主x备x级联备): 【被测功能】:MD5SHA256 【测试类型】:安全 【数据库版本】(查询命令: gaussdb -V):openGauss-lite 5.0.3 build 89d144c2) compiled at 2024-07-31 21:39:16 commit 0 last mr release 【预置条件】: 【操作步骤】(请填写详细的操作步骤): 1. 配置pg_hba.conf的 host all all 0.0.0.0/0 md5 host replication gaussdb 0.0.0.0/0 md5  2. 配置postgresql.conf的password_encryption_type = 1  3.debug https://gitee.com/opengauss/openGauss-connector-go-pq中TestReconnect单元测试 【预期输出】: cn.buf.buf 0 = {uint8} 82 1 = {uint8} 0 2 = {uint8} 0 3 = {uint8} 0 4 = {uint8} 实际字节数 5 = {uint8} 0 6 = {uint8} 0 7 = {uint8} 0 8 = {uint8} 11 【实际输出】: cn.buf.buf 0 = {uint8} 82 1 = {uint8} 0 2 = {uint8} 0 3 = {uint8} 0 4 = {uint8} 12 5 = {uint8} 0 6 = {uint8} 0 7 = {uint8} 0 8 = {uint8} 5