Fix metabase-lib/metadata/Database type (#30754)

frontend/src/metabase-lib/actions/utils.unit.spec.ts

frontend/src/metabase-lib/metadata/Database.ts

frontend/src/metabase-lib/metadata/Database.unit.spec.ts

...nd/src/metabase-lib/parameters/utils/targets.unit.spec.ts

...tend/src/metabase-lib/queries/utils/native-query-table.ts

.../components/DatabaseEditApp/Sidebar/Sidebar.unit.spec.tsx

...src/metabase/admin/permissions/selectors/confirmations.ts

...metabase/metabot/components/Metabot/Metabot.unit.spec.tsx

...DatabaseSchemaPicker/DataSelectorDatabaseSchemaPicker.tsx

...chemaPicker/DataSelectorDatabaseSchemaPicker.unit.spec.js

.../query_builder/components/dataref/DatabaseSchemasPane.tsx

...mponents/expressions/ExpressionEditorHelpText.stories.tsx

...onents/expressions/ExpressionEditorHelpText.unit.spec.tsx

...xpressionEditorTextfield/helper-text-strings.unit.spec.ts

frontend/src/metabase/selectors/metadata.ts

frontend/test/__support__/sample_database_fixture.ts

...tabase-lib/lib/queries/StructuredQuery-clean.unit.spec.js