feat(passport): keep connected account selection between signins

[freeatnet]

Feature Request

Description

The “connected accounts” dropdown selection is reset for every sign-in attempt, even if the user previously authorized the app to access some of the connected accounts. Persisting authorization settings for the app-user pair would benefit both developers and app users:

• As a user who uses a rollup.id-enabled app from multiple devices, having previous app authorizations automatically applied would let me sign in faster.
• As a developer who uses the connected accounts list to populate user profile, I could rely on the fact that any changes to the connected accounts list are the result of intentional user action (as opposed to wondering if the user forgot to select all the again on sign-in).

Proposed Solution (if applicable)

Preserve the last "connected accounts" selection for the app-user pair.

Additional Context (if applicable)

This would also simplify incremental authorization (e.g., as an app, I only need user profile and connected accounts info for read-only access, and would only request access to their smart contract wallet when they want to make a write action).

[maurerbot]

Related #2338