Configure SAML 2.0 providers for SSO authentication.
SAML requires the sso.federation grant and the @vendure-platform/sso-federation package. That grant depends on sso.oidc. SsoFederationPlugin composes SsoPlugin from @vendure-platform/sso, so you register only SsoFederationPlugin.init().
SAML providers go in the federation providers, not in the sso providers. With VendurePlatform.init(), put them in the ssoFederation block. For SAML-only SSO, set the sso providers to []:
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