## Description 

Importing a mnemonic now is done using multiple input fields.

* users can paste the mnemonic to any of the fields and all others will
populate automatically
* pressing Space inside an input of a mnemonic will focus the next input
* removed back button for forgot password page to match design
* updated some components to use the new Button element
* remove mode variant from CardLayout since now is not used anywhere

Import page




https://user-images.githubusercontent.com/10210143/224123153-bb678dd6-3d87-48d3-a7d6-763d81ad28a7.mov



Reset page



https://user-images.githubusercontent.com/10210143/224123019-d456ca5b-9428-4290-b794-27040ffcc424.mov



## Test Plan 

manually, import an account or reset it from forgot password page

there is also a e2e test that covers import page

closes [APPS-568

](https://mysten.atlassian.net/browse/APPS-568?atlOrigin=eyJpIjoiZjAxOGViY2FiM2E2NDIyM2IzOGE1NDhmMTA4MTVkMzQiLCJwIjoiaiJ9)