1771 - Set id_token_hint when logging out (Signed)

[tusharpandey13]

This is a duplicate of #1780, thanks @simon-debruijn. This PR signs the original contributor's commits while preserving their contribution history to nextjs-auth0.

• All new/changed/fixed functionality is covered by tests (or N/A)
• I have added documentation for all new/changed functionality (or N/A)

📋 Changes

• Include id_token_hint in searchParams for endSessionUrl
• Ran npm run pretty
• This is a fix in behaviour and doesn't change any public or private api

📎 References

• Issue: Send id_token_hint when logging out #1771
• Duplicate PR without tests: set id_token_hint in search params when logging out if available #1773

🎯 Testing

When triggering the logout handler you can verify if the id_token_hint search param is set during the redirect.
Before this change the id_token_hint was missing. it should be present now.

[tanya732]

Browserstack test is failing