Internal sorting orientation regression

Changes made for MCOL-1052[1] reverts the default orientation of a set internally sorted by CS.
select d_yearmonthnum * 100 + 1 d_start , count from dateinfo where d_weekdayfl = 1 and d_year = 1998 group by 1 order by 2 desc limit 1;

####before the change
MariaDB [ssb]> select d_yearmonthnum * 100 + 1 d_start , count from dateinfo where d_weekdayfl = 1 and d_year = 1998 group by 1 order by 2 desc limit 1;
------------------+

d_start

count

------------------+

------------------+
1 row in set (0.07 sec)

after the change
MariaDB [ssb]> select d_yearmonthnum * 100 + 1 d_start , count from dateinfo where d_weekdayfl = 1 and d_year = 1998 group by 1 order by 2 desc limit 1;
------------------+

d_start

count

------------------+

------------------+
1 row in set (0.01 sec)

1. https://github.com/mariadb-corporation/mariadb-columnstore-engine/commit/5d48ddb158d33f2ff903a7448315a0c12bc71c2f