feat(auth): add MFA handling in team invitations flow (#285)

- Export `MultiFactorAuthError` from `require-user` for reuse.
- Implement MFA handling during team invitations' sign-in flow.
- Add E2E test for team invitation flow with MFA.
- Update components to improve i18n translation handling.

packages/features/auth/src/components/last-auth-method-hint.tsx

@@ -62,6 +62,7 @@ function LastAuthMethodHintImpl({ className }: LastAuthMethodHintProps) {
 
       <span>
         <Trans i18nKey="auth:lastUsedMethodPrefix" />{' '}
+
         <If condition={isOAuth && Boolean(providerName)}>
           <Trans
             i18nKey="auth:methodOauthWithProvider"
@@ -71,6 +72,7 @@ function LastAuthMethodHintImpl({ className }: LastAuthMethodHintProps) {
             }}
           />
         </If>
+
         <If condition={!isOAuth || !providerName}>
           <span className="text-muted-foreground font-medium">
             <Trans i18nKey={methodKey} />