* Allow both POST and GET responses in OAuth flow
* Be more explicit about which method we fetch OAuth data from
* Removed unnecessary error handling in OAuth router
* Fixed method check in OAuth router
* Simplified method check
* Added POST support to OpenID flow
* Prefer redirect on OpenID POST to retain LAX cookie policy
* Prefer redirect on OAuth2 POST to retain LAX cookie policy
* Update api/src/auth/drivers/oauth2.ts
* Update api/src/auth/drivers/openid.ts