Merge branch 'cleanup/replace-usage-of-leaf-level-mcmg' into 'master'
I need this fix on the release branch for 2.8-based teaching materials.
[cleanup] Replace deprecated LeafMCMGMapper by regular MCMGMapper
See merge request !566 (merged)
(cherry picked from commit 85617a08)
4a05c789 [cleanup] Replace deprecated LeafMCMGMapper by regular MCMGMapper