[PM-7191] Add fallback to showing passwords when trying to request passkey for websites that only support password

[dinisvieira]

Type of change

• Bug fix
• New feature development
• Tech debt (refactoring, code cleanup, dependency upgrades, etc)
• Build/deploy pipeline (DevOps)
• Other

Objective

When the user tries to autofill a webpage and there’s a passkey related error, they’ll see our iOS extension open with an error message. After pressing ok, the activity indicator / loading spinner isn’t removed and search won’t work, preventing users from autofilling other credentials.
We should fallback to passwords in this scenario. This fallback is based on calling SilentCredentialDiscoveryAsync()

Code changes

During initialization we could call SilentCredentialDiscoveryAsync() to check if any passkey exists for the given RPId, if not we configure the UI to show Passwords.

• LoginListViewController.cs:

Screenshots

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