chore(passport): Check isLoggedIn before calling loginWithOIDC

[imx-mikhala]

Hi👋, please ensure the PR title follows the below standards:

• PR is titled with conventional commit style naming: type(scope): message. For example: feat(passport): my new feature
• If you have introduced modification that necessitates immediate adjustments by this SDK's users to their applications, clients, or integrations to avert disruptions to existing features or functionalities, add a ! after the type(scope), for example feat(passport)!: my new breaking feature

Summary

• Check isLoggedIn before calling loginWithOIDC to prevent unnecessary calls to the Magic OIDC endpoint

Detail and impact of the change

Added

Changed

Deprecated

Removed

Fixed

Security

Anything else worth calling out?

[pano-skylakis]