Protect stdout and stderr so JavaScript code can't accidentally write to stdout corrupting ink rendering (#13247)

Bypassing rules as link checker failure is spurious.

packages/a2a-server/src/agent/task.ts

@@ -436,7 +436,6 @@ export class Task {
       onToolCallsUpdate: this._schedulerToolCallsUpdate.bind(this),
       getPreferredEditor: () => 'vscode',
       config: this.config,
-      onEditorClose: () => {},
     });
     return scheduler;
   }