test: fix tsgo baseline test compatibility

src/plugin-sdk/keyed-async-queue.test.ts

@@ -2,7 +2,12 @@ import { describe, expect, it, vi } from "vitest";
 import { enqueueKeyedTask, KeyedAsyncQueue } from "./keyed-async-queue.js";
 
 function deferred<T>() {
-  const { promise, resolve, reject } = Promise.withResolvers<T>();
+  let resolve!: (value: T | PromiseLike<T>) => void;
+  let reject!: (reason?: unknown) => void;
+  const promise = new Promise<T>((res, rej) => {
+    resolve = res;
+    reject = rej;
+  });
   return { promise, resolve, reject };
 }