Ensure admin-login screen is in line with Open Formulieren's interface

[alextreme]

Thema / Theme

Admin

Omschrijving / Description

We currently use OIDC as the main authentication flow (with behind that Keycloak/Entra/whatever).
However, we keep on having to instruct new users to the components that they have to click on "Inloggen met organisatieaccount", I see all too often that new users attempt to use the regular username+password fields:

Although not ideal (as both links are equaly prominent), I'd like to update the Team Bron components to make use of the same admin login-view as Open Formulieren.

A better approach may be to convert "Inloggen met organisatieaccount" to a single "Inloggen" primary button, and provide a link to only the application account option.

Toegevoegde waarde / Added value

Easier onboarding

Aanvullende opmerkingen / Additional context

No response

[stevenbal]

I will discuss this with the other team leads to get consensus on a solution

[stevenbal]

Discussed today with the other lead devs, Sergei mentioned he planned on porting the implementation for this in Open Forms to maykin-common, not sure when this will be done, but that makes things consistent at least