test(gateway): include aborted chat run state in mock

src/gateway/server-methods/chat.error-broadcast.test.ts

@@ -8,6 +8,7 @@ function createMockContext() {
   const broadcast = vi.fn();
   const nodeSendToSession = vi.fn();
   const chatAbortControllers = new Map();
+  const chatAbortedRuns = new Map();
   const agentRunSeq = new Map<string, number>();
   const dedupe = new Map();
 
@@ -15,6 +16,7 @@ function createMockContext() {
     broadcast,
     nodeSendToSession,
     chatAbortControllers,
+    chatAbortedRuns,
     agentRunSeq,
     dedupe,
     getRuntimeConfig: () => ({ agents: { list: [{ id: "main", default: true }] } }),