This was fixed via https://salsa.debian.org/mariadb-team/mariadb-server/-/commit/34b945a557256e02115dfd155cf73cb63aa22359 and merged.
We have webhooks configured at https://salsa.debian.org/mariadb-team/mariadb-server/-/hooks as documented at https://wiki.debian.org/Salsa/Doc#Dealing_with_Debian_BTS_from_commit_messages but for some reason it didn't update this Debian bug automatically..
