fix: Automatically disable email sign-in when SMTP is not configured

fix: Do not show email signin as enabled when SMTP configured
closes #3227

server/routes/api/auth.ts

@@ -17,7 +17,7 @@ function filterProviders(team: Team) {
       // guest sign-in is an exception as it does not have an authentication
       // provider using passport, instead it exists as a boolean option on the team
       if (provider.id === "email") {
-        return team && team.guestSignin;
+        return team?.emailSigninEnabled;
       }
 
       return (