Move permission for Two Factor Auth to top

[amenk]

Fix: As a restricted user I want to be able to setup and login using TFA, without seeing an empty System -> Permissions menu

Description (*)

We have very restricted users who can only see a sales menu; now they should be able to use TFA which needs the Magento_TwoFactorAuth::tfa permission. But this would require to also see the system menu

Fixed Issues (if relevant)

Manual testing scenarios (*)

1. give only a sales order menu and "Use Two Factor Auth" permission
2. login using TFA, see only the sales menu

Contribution checklist (*)

• Author has signed the Adobe CLA
• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds are green)