chore: Improve graceful server shutdown (#4625)

* chore: Improve graceful server shutdown

* Replace node timers with custom promise timeout

server/utils/queue.ts

@@ -3,6 +3,7 @@ import { snakeCase } from "lodash";
 import env from "@server/env";
 import Metrics from "@server/logging/Metrics";
 import Redis from "../redis";
+import ShutdownHelper, { ShutdownOrder } from "./ShutdownHelper";
 
 export function createQueue(
   name: string,
@@ -57,5 +58,9 @@ export function createQueue(
     }, 5 * 1000);
   }
 
+  ShutdownHelper.add(name, ShutdownOrder.normal, async () => {
+    await queue.close();
+  });
+
   return queue;
 }