[lib] Introduce usePreRequestUserState

Summary:
This should be a simple no-op refactor. I'm introducing this hook because in the next diff I'll be refactoring it.

Depends on D11654

Test Plan: Flow. Tested in combination with the next diff

Reviewers: inka

Reviewed By: inka

Subscribers: tomek

Differential Revision: https://phab.comm.dev/D11655