Knowledge base describes global variable innodb_version .
It is not marked as deprecated, but it seems it was removed by MDEV-7408.

We were used to gain during monitoring such query to collect base DB information:

SELECT @@GLOBAL.innodb_version AS DB_Version,

@@GLOBAL.version_comment AS Version_Comment,

@@GLOBAL.version_compile_machine AS Architecture,

@@GLOBAL.version_compile_os AS OS;

it is working across all versions of mySQL and was working for MariaDB till 10.9

But since Maria 10.10 occurs regression from our point view, because we get error like
[HY000] [ma-3.1.16][11.1.1-MariaDB-1:11.1.1+maria~ubu2204]Unknown system variable 'innodb_version'

At least would be good modify the KB accordingly to current status.