WD-12178 - fix: handle 500 errors for the whoami endpoint

[huwshimi]

Done

• Handle 500 errors when checking if the user is authenticated.

QA

• Log in using OIDC.
• Using your browser's dev tools find the jimm-browser-session cookie and change the value to anything.
• Reload the dashboard.
• It should display the "Unable to check authentication status." error.

Details

https://warthogs.atlassian.net/browse/WD-12178 https://warthogs.atlassian.net/browse/WD-12176

[webteam-app]

Demo

Jenkins

demos.haus

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 97.19%. Comparing base (7132462) to head (8aea1e0).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1778 +/- ## ======================================= Coverage 97.19% 97.19% ======================================= Files 422 422 Lines 23211 23225 +14 Branches 2950 2952 +2 ======================================= + Hits 22559 22573 +14 Misses 652 652 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.