MDEV-38136: Prevent elimination of tables in a FULL OUTER JOIN#4454

DaveGosselin-MariaDB wants to merge 1 commit into12.3-MDEV-37933-outer-to-left-right-or-innerMariaDB/server:12.3-MDEV-37933-outer-to-left-right-or-innerfrom

12.3-MDEV-38136-table-eliminationMariaDB/server:12.3-MDEV-38136-table-eliminationCopy head branch name to clipboard