refactor(auth/sso): rename GetAuthorizationUrl for clarity (#10173)

- Rename `GetAuthorizationUrl` to `GetAuthorizationUrlForSSO`
- Move `GetAuthorizationUrlForSSO` from `sso.resolver.ts` to
`auth.resolver.ts` to avoid the permission guard and let users use an
SSO provider.
- Fix an issue in OIDC guard that breaks the connection if you have
multiple SSO providers + add tests for OIDC guard.

packages/twenty-server/src/engine/middlewares/constants/excluded-middleware-operations.constant.ts

@@ -14,6 +14,6 @@ export const EXCLUDED_MIDDLEWARE_OPERATIONS = [
   'UpdatePasswordViaResetToken',
   'IntrospectionQuery',
   'ExchangeAuthorizationCode',
-  'GetAuthorizationUrl',
+  'GetAuthorizationUrlForSSO',
   'GetPublicWorkspaceDataByDomain',
 ] as const;