This bug appeared after the patch for bug MDEV-23886. Due to this bug
execution of queries with CTEs used the same CTE at least twice via
prepared statements or with stored procedures caused crashes of the server.
It happened because the select created for any of not the first usage of
a CTE erroneously was not included into all_selects_list.
This patch corrects the patch applied to fix the bug MDEV-26108.

Approved by Oleksandr Byelkin <sanja@mariadb.com>