[native] Read native credentials during restore flow

Summary:
When a user restores their account, we should try to fill the input using native credentials - just like we do for the login flow.

https://linear.app/comm/issue/ENG-10046/use-native-credentials-on-the-password-restore-screen

Depends on D14182

Test Plan: Register a password account, wipe state, open restore password screen - the input should contain credentials of the registered account.

Reviewers: kamil, bartek

Reviewed By: kamil

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D14183