chore(docs): Update Express sign-in and sign-out examples with TypeScript (#12467)
* docs: add Express sign-in and sign-out route examples to session management
* chore(docs): update Express sign-in and sign-out examples to use TypeScript and improve error handling
* chore(docs): update sign-out example in session management to redirect to home
* chore(docs): update sign-out example in session management to use correct import for signOut