fix mfa login after keycloak

app/api/after-mfa/route.ts

@@ -0,0 +1,28 @@
+import { enhanceRouteHandler } from '@/packages/next/src/routes';
+import { createAuthCallbackService } from '@/packages/supabase/src/auth-callback.service';
+import { getSupabaseServerClient } from '@/packages/supabase/src/clients/server-client';
+
+export const POST = () =>
+  enhanceRouteHandler(
+    async () => {
+      try {
+        const supabaseClient = getSupabaseServerClient();
+        const {
+          data: { user },
+        } = await supabaseClient.auth.getUser();
+        const service = createAuthCallbackService(supabaseClient);
+
+        if (user && service.isKeycloakUser(user)) {
+          await service.setupMedusaUserForKeycloak(user);
+        }
+
+        return new Response(null, { status: 200 });
+      } catch (err) {
+        console.error('Error on verifying:', { err });
+        return new Response(null, { status: 500 });
+      }
+    },
+    {
+      auth: false,
+    },
+  );