After invalid credentials werther incorrectly redirects.

[indietyp]

Describe the bug

I have WERTHER_WEB_BASE_PATH set to /werther/ which works correctly to show the UI.

There are two cases that can happen:

• Successful login: Everything works as expected
• Invalid Credentials: everything seems to work correctly, the user is redirected to the correct page, but this time, if I send the correct credentials the base path is no longer respected, and instead of POST-ing to /werther/auth/login, it POSTs to /auth/login

To Reproduce
Steps to reproduce the behavior:

1. Set WERTHER_WEB_BASE_PATH
2. Navigate to the new URL
3. Put in invalid credentials
4. Put in valid credentials <- this will redirect wrongly

Expected behavior

The base path is respected even on retries

Desktop (please complete the following information):

• OS: macOS
• Browser: Firefox
• Version: 121.0b6

Additional context
Add any other context about the problem here.