🐛 fix(connection): 收敛数据库连接参数白名单

- MySQL 兼容 JDBC 参数映射并丢弃 allowPublicKeyRetrieval 等无效参数
- 为 PostgreSQL 系、SQL Server、Oracle、达梦、TDengine 接入驱动参数白名单
- 补充连接参数归一化、别名映射和未知参数过滤回归测试

internal/db/kingbase_impl.go

@@ -71,7 +71,7 @@ func (k *KingbaseDB) getDSN(config connection.ConnectionConfig) string {
 	params.Set("dbname", config.Database)
 	params.Set("sslmode", resolvePostgresSSLMode(config))
 	params.Set("connect_timeout", strconv.Itoa(getConnectTimeoutSeconds(config)))
-	mergeConnectionParamsFromConfig(params, config, "kingbase")
+	mergeConnectionParamsFromConfigWithAllowlist(params, config, kingbaseConnectionParamNames, "kingbase")
 
 	preferred := []string{"host", "port", "user", "password", "dbname", "sslmode", "connect_timeout"}
 	seen := make(map[string]struct{}, len(params))