Fix "cancelled on client" moving workflow.stop out to SIGTERM handler

Signed-off-by: Paul Yuknewicz <paulyuk@microsoft.com>

workflows/javascript/sdk/order-processor/app.ts

@@ -2,10 +2,12 @@ import { DaprWorkflowClient, WorkflowRuntime, DaprClient, CommunicationProtocolE
 import { InventoryItem, OrderPayload } from "./model";
 import { notifyActivity, orderProcessingWorkflow, processPaymentActivity, requestApprovalActivity, reserveInventoryActivity, updateInventoryActivity } from "./orderProcessingWorkflow";
 
+const workflowWorker = new WorkflowRuntime();
+
 async function start() {
   // Update the gRPC client and worker to use a local address and port
   const workflowClient = new DaprWorkflowClient();
-  const workflowWorker = new WorkflowRuntime();
+
 
   const daprHost = process.env.DAPR_HOST ?? "127.0.0.1";
   const daprPort = process.env.DAPR_GRPC_PORT ?? "50001";
@@ -60,10 +62,13 @@ async function start() {
     throw error;
   }
 
-  await workflowWorker.stop();
   await workflowClient.stop();
 }
 
+process.on('SIGTERM', () => {
+  workflowWorker.stop();
+})
+
 start().catch((e) => {
   console.error(e);
   process.exit(1);