fix: ensure utilityProcess only emits one 'exit' event (#44243)

fix: ensure utilityProcess only emits one exit

shell/browser/api/electron_api_utility_process.h

@@ -105,6 +105,7 @@ class UtilityProcessWrapper final
   int stdout_read_fd_ = -1;
   int stderr_read_fd_ = -1;
   bool connector_closed_ = false;
+  bool terminated_ = false;
   std::unique_ptr<mojo::Connector> connector_;
   blink::MessagePortDescriptor host_port_;
   mojo::Receiver<node::mojom::NodeServiceClient> receiver_{this};