With the release of new intent types for Settings (Admin intents now support Settings - Shopify developer changelog), the types are missing from the general package, which causes type issues in codebases.
The IntentType is also not up to date in the documentation: Intents
Ideally all these new types become available in the react version of App Bridge which is what most people are using today: https://www.npmjs.com/package/@shopify/app-bridge-react.