feat: new mobile wallet drawer import flow

[NeOMakinG]

Description

• Import flow within the new mobile wallet dialog
• Fixes the fact that you can't go back from create wallet
• Fixes a few onboarding modal issues (this should be full width soon with the mobile polish)

Issue (if applicable)

closes #8794

Risk

High Risk PRs Require 2 approvals

What protocols, transaction types, wallets or contract interactions might be affected by this PR?

Testing

Mobile app only:

• Try to open create wallet and import from the mobile home then go back
• Try go create a wallet from mobile home, should work as usually
• Try to import a wallet from mobile home, should work as usually
• Try to click on create a wallet and go back (from the already connected view)
• Try to click on import a wallet and go back (from the already connected view)
• Try to create a wallet by being connected to another wallet already, should work
• Try to import a wallet by being connected to another wallet already, should work

Engineering

n/a

Operations

n/a

• 🏁 My feature is behind a flag and doesn't require operations testing (yet)

Screenshots (if applicable)

https://jam.dev/c/d7fe265e-f6a7-4386-9f1f-2f81e54ca092

[gomesalexandre]

Conceptually looks sane to me - runtime pass incoming!

[gomesalexandre]

Mobile app: https://jam.dev/c/cd606e36-dce8-42c7-8fed-35e7aad99b53
Mobile web: https://jam.dev/c/52d84c28-93c2-40da-a944-26b4f5107778
Weby web: https://jam.dev/c/975e8b90-3951-4dfb-82d9-fba95fd6de93