This miniset addresses two potential conversions to `global_schema_ptr` of incomplete materialized views schemas.
One of them was completely unnecessary and also is a "chicken and an egg" problem where on the sync schema procedure itself a view schema was converted to `global_schema_ptr` solely for the purposes of logging. This can create a
"hickup" in the materialized views updates if they are comming from a node with a different mv schema.
The reason why sometimes a synced schema can have no base info is because of deactivision and reactivision of the schema inside the `schema_registry` which doesn't restore the base information due to lack of context.
When a schema is synced the problem becomes easy since we can just use the latest base information from the database.
Fixes#14011Closesscylladb/scylladb#14861
* github.com:scylladb/scylladb:
migration manager: fix incomplete mv schemas returned from get_schema_for_write
migration_manager: do not globalize potentially incomplete schema
(cherry picked from commit 5752dc875b)
6d01d01deb