* add updateSettingsToDB28 func and test
* update DBversion const
* migration func naming modification
* feat(oauth): add sso, hide internal auth teaser and logout options. (#5039)
* cleanup and make helper func for unit testing
* dbversion update
* feat(publicSettings): public settings response modification for OAuth SSO EE-608 (#5062)
* feat(oauth): updated logout logic with logoutUrl. (#5064)
* add exclusive token generation for OAuth
* swagger annotation revision
* add unit test
* updates based on tech review feedback
* feat(oauth): updated oauth settings model
* feat(oauth): added oauth logout url
* feat(oauth): fixed SSO toggle and logout issue.
* set SSO to ON by default
* update migrator unit test
* set SSO to true by default for new instance
* prevent applying the SSO logout url to the initial admin user
Co-authored-by: fhanportainer <79428273+fhanportainer@users.noreply.github.com>
Co-authored-by: Felix Han <felix.han@portainer.io>
Hui