Current session lost when auth function call fails

[bombillazo]

Bug report

• [x] I confirm this is a bug with Supabase, not with my own application.
• [x] I confirm I have searched the Docs, GitHub Discussions, and Discord.

Describe the bug

Currently, the client logic calls _removeSession to clear the session when doing an auth call. If the call fails, the existing session is never restored and is lost, effectively disconnecting the user session.

To Reproduce

Steps to reproduce the behavior, please provide code snippets or a repository:

1. Create a supabase client and log in
2. Call an auth function with invalid parameters
3. Get the client session

Expected behavior

The existing client session is kept in the event of a fail.

System information

• Version of supabase-js: 2.64.2