move idp mode check to a middleware

server/private/routers/orgIdp/createOrgOidcIdp.ts

@@ -27,7 +27,6 @@ import config from "@server/lib/config";
 import { CreateOrgIdpResponse } from "@server/routers/orgIdp/types";
 import { isSubscribed } from "#private/lib/isSubscribed";
 import { tierMatrix } from "@server/lib/billing/tierMatrix";
-import privateConfig from "#private/lib/config";
 import { build } from "@server/build";
 
 const paramsSchema = z.strictObject({ orgId: z.string().nonempty() });
@@ -94,18 +93,6 @@ export async function createOrgOidcIdp(
             );
         }
 
-        if (
-            privateConfig.getRawPrivateConfig().app.identity_provider_mode !==
-            "org"
-        ) {
-            return next(
-                createHttpError(
-                    HttpCode.BAD_REQUEST,
-                    "Organization-specific IdP creation is not allowed in the current identity provider mode. Set app.identity_provider_mode to 'org' in the private configuration to enable this feature."
-                )
-            );
-        }
-
         const {
             clientId,
             clientSecret,