[Project] Allow sending toast notifications outside of React code

We should move error notification sending to the global context. TanStack Query has a method of doing that through the query client. But this is configured outside of React land. This means we must allow enqueuing a notification without needing a React Hook to do it.

- [TanStack Query article describing error handling](https://tkdodo.eu/blog/breaking-react-querys-api-on-purpose#a-bad-api)