Add the missing MICROSOFT_365 value to the connector_provider enum
so the connector loader stops failing with SQLSTATE 22P02.
Scope each Identity Provider card to its own SCIMBridge type so
connecting Microsoft 365 no longer marks Google Workspace as
connected (and vice versa).
Filter Microsoft Graph /users to userType eq 'Member' so the bridge
only syncs home-tenant members and skips B2B guest accounts that
were polluting the synced People list.
Signed-off-by: Bryan Frimin <bryan@getprobo.com>