Login page customization to make OIDC more prominent #5381
Description
My school's homeserver (and up to 90% of the other services) rely on OIDC for authentication.
As a result, our regular users (150 staff, 1500+ pupils) do not have a user/pass for Synapse, only their OIDC credentials.
As such, the MAS login page is a bit ... unfortunate as it presents the regular user/pass prominently and the OIDC option is presented further down.
On some devices it's not even visible directly unless you scroll down.
Which in turn leads to confusion when their credentials don't work on this page.
I'd love it if it was possible to configure it such that the user/pass form could be delegated behind the OIDC options (or even hidden behind an accordion).
After all, from what I understood, the whole point of MAS was to enable true OIDC - why not make it a first-class citizen?