Hi @n1c0
Welcome to the Auth0 Community!
You are right; Google OAuth does not work with embedded web views per policy. → Modernizing OAuth interactions in Native Apps for Better Usability and Security - Google Developers Blog
You can utilize the GET /authorize endpoint to direct the user to the specific ODIC connection by specifying the connection parameter. This should bypass the Universal Login prompt. Authentication API Explorer
I hope this will help you!
Dawid