🔧 Hotfix registration

[davidreneuw]

There was an issue that prevented users from logging in the first time after registering. After registering, the user account exists in the tenant, but there is no portal user created for them just yet. Because of that, the current flow for checking if a user needs to register first when they attempt to login was redirecting them to the registration page upon their first login.

This PR adds an extra step that checks if their user account exists in the tenant, and if it does, proceeds to normal login flow.

Here's the flow:

flowchart TD
    A[User attempts to login] --> B{Check if associated PortalUser exists}
    B -->|Exists and Locked| C[Redirect to locked page]
    B -->|Exists and Deleted| D[Redirect to registration page with deleted state]
    B -->|Exists| E[Redirect to Microsoft login]
    B -->|Does not exist| F{NEW: Check if Entra ID account exists in the tenant}
    F-->|Exists| E
    F-->|Does not exist| H[Redirect to registration page with new user state]

Loading

[Sean-Stilwell]

LGTM! Thanks for the fix!