Issue in Configuring Identity Server as IDP for SSO

[BLasan]

Description:
Given steps to configure IS as IDP for SSO are not clear and while logging it does not redirect to the login page. It's getting stuck on the following URL

https://localhost:9443/oauth2/authorize?response_type=code&client_id=Unb1NTUkerbI8rlMkdaW9foKJl4a&scope=apim:admin%20apim:api_create%20apim:api_definition_view%20apim:api_delete%20apim:api_generate_key%20apim:api_import_export%20apim:api_list_view%20apim:api_manage%20apim:api_mediation_policy_manage%20apim:api_product_import_export%20apim:api_publish%20apim:api_view%20apim:app_import_export%20apim:client_certificates_add%20apim:client_certificates_manage%20apim:client_certificates_update%20apim:client_certificates_view%20apim:comment_manage%20apim:comment_view%20apim:comment_write%20apim:common_operation_policy_manage%20apim:common_operation_policy_view%20apim:document_create%20apim:document_manage%20apim:ep_certificates_add%20apim:ep_certificates_manage%20apim:ep_certificates_update%20apim:ep_certificates_view%20apim:gateway_policy_manage%20apim:gateway_policy_view%20apim:mediation_policy_create%20apim:mediation_policy_manage%20apim:mediation_policy_view%20apim:policies_import_export%20apim:pub_alert_manage%20apim:publisher_settings%20apim:shared_scope_manage%20apim:subscription_block%20apim:subscription_manage%20apim:subscription_view%20apim:threat_protection_policy_create%20apim:threat_protection_policy_manage%20apim:tier_manage%20apim:tier_view%20openid%20apim:api_view%20service_catalog:service_view%20service_catalog:service_write&state=%2F&redirect_uri=https://localhost:9443/publisher/services/auth/callback/login

[SavinduDimal]

Related Documentation: https://apim.docs.wso2.com/en/4.3.0/reference/customize-product/extending-api-manager/saml2-sso/configuring-identity-server-as-idp-for-sso/