fix: add SSE polling scenario to pending list

The server-sse-polling scenario requires a server with SEP-1699 support
to return SUCCESS. Since the mock server in tests doesn't support SSE
polling, the scenario returns INFO status. Move it to the pending list
to exclude from active test suite while keeping it available for
explicit testing.

Author: felixweinberger

src/scenarios/index.ts

@@ -52,7 +52,9 @@ import { authScenariosList } from './client/auth/index.js';
 // Pending client scenarios (not yet fully tested/implemented)
 const pendingClientScenariosList: ClientScenario[] = [
   // Elicitation scenarios (SEP-1330)
-  new ElicitationEnumsScenario()
+  new ElicitationEnumsScenario(),
+  // SSE Polling scenarios (SEP-1699) - requires server with SSE polling support
+  new ServerSSEPollingScenario()
 ];
 
 // All client scenarios