Fix metadata for SQL-based sandboxes (#14734)

backend/mbql/src/metabase/mbql/schema.clj

...e_enterprise/sandbox/models/group_table_access_policy.clj

...box/query_processor/middleware/row_level_restrictions.clj

...uery_processor/middleware/row_level_restrictions_test.clj

...d/test/metabase-enterprise/sandboxes/sandboxes.cy.spec.js

test/metabase/api/table_test.clj

test/metabase/query_processor_test/breakout_test.clj

test/metabase/query_processor_test/remapping_test.clj

test/metabase/test.clj

test/metabase/test/data.clj

test/metabase/test/data/users.clj

test/metabase/test/util.clj