feat: fix azure tenant login

[alexleetc28]

What kind of change does this PR introduce?

Bug fix: Currently, Azure tenant users cannot log in due to Error getting user email from external provider.

What is the current behavior?

The reason, as noted in #1269, is that Azure login has been changed to use id_token instead of calling the /oidc/userinfo endpoint in GetUserData(). However, when signing in to an Azure tenant, the returned id_token does not contain an email or UPN, which causes the above error.
#550

What is the new behavior?

Use the /oidc/userinfo endpoint instead of id_token when the user is not using defaultAzureAPIBase.

[hf]

Azure Entra / Active Directory has a severe security vulnerability with the /oidc/userinfo endpoint. It was reported to Microsoft by this team as VULN-110722 and the response from Microsoft was:

Our team investigated this report and determined it to be as intended by design. The relevant product team has been notified to scrutinize the documentation and make updates for improved clarity, if necessary.

Meaning that Supabase Auth cannot use the User Info endpoint at this time.

Thank you for trying to fix the issue!

More info here: https://supabase.com/docs/guides/auth/social-login/auth-azure#guarding-against-unverified-email-domains