feat(core): wire up UI for ASK_USER policy decisions in message bus (#10630)

packages/a2a-server/src/utils/testing_utils.ts

@@ -50,6 +50,9 @@ export function createMockConfig(
     getEmbeddingModel: vi.fn().mockReturnValue('text-embedding-004'),
     getSessionId: vi.fn().mockReturnValue('test-session-id'),
     getUserTier: vi.fn(),
+    getEnableMessageBusIntegration: vi.fn().mockReturnValue(false),
+    getMessageBus: vi.fn(),
+    getPolicyEngine: vi.fn(),
     ...overrides,
   } as unknown as Config;