Redirect login failures if Google/Facebook/Apple login email found

Plenty of our learners originally sign up with their Google/Facebook/Apple account, but then try to enter that email address in the email+password section to login.

It would save a whole lot of trivial administration if the system searched for users with that email address and directed them to the appropriate Google/Facebook/Apple login page if it finds a match.

If the login page could also add something like the below to the login error message that would surely help also:

"If you signed up with Google, Facebook or Apple, use that to sign in again."