Add setup admin invitation (#19404)

...atabases/components/widgets/EngineWidget/EngineWidget.jsx

frontend/src/metabase/components/AddDatabaseHelpCard.jsx

...mepage/components/CollectionSection/CollectionSection.tsx

...ponents/CollectionSection/CollectionSection.unit.spec.tsx

...e/homepage/components/DatabaseSection/DatabaseSection.tsx

.../components/DatabaseSection/DatabaseSection.unit.spec.tsx

...e/homepage/components/GreetingSection/GreetingSection.tsx

.../components/GreetingSection/GreetingSection.unit.spec.tsx

...c/metabase/home/homepage/components/Homepage/Homepage.tsx

...se/home/homepage/components/StartSection/StartSection.tsx

...mepage/components/StartSection/StartSection.unit.spec.tsx

...ome/homepage/components/SyncingSection/SyncingSection.tsx

...ge/components/SyncingSection/SyncingSection.unit.spec.tsx

...base/home/homepage/components/XraySection/XraySection.tsx

...homepage/components/XraySection/XraySection.unit.spec.tsx

frontend/src/metabase/home/homepage/types.ts

frontend/src/metabase/lib/settings.ts

frontend/src/metabase/setup/CODENOTIFY

frontend/src/metabase/setup/actions.js

frontend/src/metabase/setup/actions.ts