dev: source setting screens from global

[justlevine]

What

This PR refactors the frontend package to source the screen titles, menu label, and descriptions from the server via the wpGraphQLLogin.settings global.

Why

So new settings don't need to be manually allow-listed.

How

Provider screen is still manually hydrated until that component gets refactored.

Testing Instructions

Additional Info

Checklist:

• My code is tested to the best of my abilities.
• My code follows the WordPress Coding Standards.
• My code has proper inline documentation.
• I have added unit tests to verify the code works as intended.
• I included the relevant changes in CHANGELOG.md