[php-src] Issue #7932: MariaDB version prefix `5.5.5-` is not stripped

Issue: https://github.com/php/php-src/issues/7932 Comment Author: mvorisek in https://github.com/php/php-src/blob/72cdb0af5500b57e4a83c6eeb64faf5bb3a917e7/ext/mysqlnd/mysqlnd_connection.c#L1281 there is a fix to parse the version correctly, however mysqli::get_server_info method still returns the unfixed/prefixed version because of https://jira.mariadb.org/browse/MDEV-4088 protocol fix for replication the version returned by mysqli::get_server_info should be fixed and should match version returned by select version()