The current description is not accurate: the function doesn't throw
an exception if there's an invalid materialized view. Instead, it
simply logs the keyspaces that violate the requirement.
Furthermore, the experimental feature `views-with-tablets` is no longer
necessary for considering a materialized view as valid. It was dropped
in scylladb/scylladb@b409e85c20. The
replacement for it is the cluster feature `VIEWS_WITH_TABLETS`.
Fixesscylladb/scylladb#26420Closesscylladb/scylladb#26421
(cherry picked from commit a9577e4d52)
Closesscylladb/scylladb#26476