Fix `ConnOpenRandom` case in `ConnOpenStrategy` during connection dial#1655

kavirajk wants to merge 3 commits intoClickHouse:mainClickHouse/clickhouse-go:mainfrom

kavirajk:kavirajk/bug-multi-host-random-selectionkavirajk/clickhouse-go:kavirajk/bug-multi-host-random-selectionCopy head branch name to clipboard