* fix(proxy): tell outdated litellm CLIs to upgrade when CLI SSO login id is legacy sk- format
* fix(cli): surface server error detail when SSO login polling fails and stop on permanent 4xx
* fix(cli): exhaustive, actionable error handling across the CLI SSO login flow
* Cleanup code for user cli auth, and make sure not to prompt user for team multiple times while polling
* Adding tests
* Cleanup normalize teams some more