Reset multi_auth to initial state on error

[ekzyis]

Description

Based on #1998

Instead of just removing all multi_auth cookies on error, we now reset to the initial state.

Checklist

Are your changes backwards compatible? Please answer below:

yes

On a scale of 1-10 how well and how have you QA'd this change and any features it might affect? Please answer below:

7. Tested by removing each multi_auth cookie and seeing it getting set again.

2025-03-21.20-40-01.mp4

For frontend changes: Tested on mobile, light and dark mode? Please answer below:

n/a

Did you introduce any new environment variables? If so, call them out explicitly here:

no

[huumn]

Works well. Only, I see weird behavior when reseting cookies as anon. See video

Screen.Recording.2025-03-22.at.5.24.23.PM.mov

[ekzyis]

Ah, this happens because my code to know which account is currently selected sucks. It assumes that the cookie pointer is only updated by the client.

I think I'll create a useCookie function which detects cookie changes and returns updated cookies in a React-y way instead of what I am currently doing.