feat(auth): [PM-15534] log user in when submitting recovery code

- Add recovery code enum and feature flag
- Update recovery code text and warning messages
- Log user in and redirect to two-factor settings page on valid recovery code
- Run full sync and handle login errors silently
- Move updated messaging behind feature flag

PM-15534

libs/common/src/auth/enums/two-factor-provider-type.ts

@@ -7,4 +7,5 @@ export enum TwoFactorProviderType {
   Remember = 5,
   OrganizationDuo = 6,
   WebAuthn = 7,
+  RecoveryCode = 8,
 }