Add CTA that lets users know they can paste into recover account

[piyalbasu]

In the recover account flow, currently users are able to paste a complete recovery phrase into the first bubble and the app will automatically populate all the bubbles with each individual word.

This was only announced in a blog post, so users may not know they are able to do this. We should add some sort of CTA that lets users know that they can do this

[sdfcharles]

1. Added You can also paste the phrase in the first box. to the subtext
2. Added a Paste button to the left of Hide

Figma designs

[Keeeeeeeks]

Set as P2, since it doesn't block critical flows, but improves onboarding UX

[Keeeeeeeks]

1. Just add the additional copy to this screen.
2. We don't need to add the 'paste' button, and we don't need to implement the optionalPermission for copying from clipboard