Cherry-pick of AmgMatrixBasePlugin static_assert changes from main

Would be nice to have for 24.0 as well - should reduce branching in these methods.

AmgMatrixBasePlugin: Use static assert when requiring a vector of at least a size

See merge request !73549 (merged)

(cherry picked from commit 3b38865f)

8446888b AmgMatrixBasePlugin: For eta we use a static assert. Try to use the same one for phi,theta etc 4bcbb37b Move to static assert

Co-authored-by: Tadej Novak tadej.novak@cern.ch