redirectTo Ignored on Failed SSO Sign-In

# Bug report <!-- ⚠️ We receive a lot of bug reports which have already been solved or discussed. If you are looking for help, please try these first: - Docs: https://docs.supabase.com - Discussions: https://github.com/supabase/supabase/discussions - Discord: https://discord.supabase.com Before opening a bug report, please verify the following: --> - [x] I confirm this is a bug with Supabase, not with my own application. - [x] I confirm I have searched the [Docs](https://docs.supabase.com), GitHub [Discussions](https://github.com/supabase/supabase/discussions), and [Discord](https://discord.supabase.com). ## Describe the bug When using the `signInWithSSO` method and specifying a `redirectTo` URL, the redirection works correctly only if the sign-in is successful. However, if sign-in fails (e.g., due to the user being banned), the `/acs` endpoint redirects to the default URL instead of the `redirectTo` URL provided. ## To Reproduce 1. Ban SSO (SAML2) user 1. Make sure redirectTo URL is in allowed list 1. Try to sign in and specify the redirectTo URL ``` const { data, error } = await supabase.auth.signInWithSSO({ providerId, options: { redirectTo: `http://localhost:3000/auth/callback`, }, }); ``` ## Expected behavior After failed SSO login (e.g., due to banned user status), the user should be redirected to the URL specified in the `redirectTo` parameter (same as with successful sign-in), allowing for appropriate handling (e.g., custom error UI, tracking, etc.). ## Screenshots If applicable, add screenshots to help explain your problem. ## System information - OS: [e.g. macOS, Windows] - Browser (if applies) [e.g. chrome, safari] - Version of supabase-js: [e.g. 6.0.2] - Version of Node.js: [e.g. 10.10.0] ## Additional context Add any other context about the problem here.