test(chat): use shared async helper

Author: Bill Leoutsakos

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/hooks/use-workflow-execution.test.tsx

@@ -2,6 +2,7 @@
  * @vitest-environment jsdom
  */
 import { act, type ReactNode } from 'react'
+import { sleep } from '@sim/utils/helpers'
 import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
 import { createRoot, type Root } from 'react-dom/client'
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
@@ -609,7 +610,7 @@ describe('useWorkflowExecution attachment uploads', () => {
         blockExecutionId: 'invoke-streamed',
         chunk: 'streamed answer',
       })
-      await new Promise((resolve) => setTimeout(resolve, 0))
+      await sleep(0)
       await options.callbacks?.onBlockCompleted?.({
         blockId: 'agent-1',
         blockExecutionId: 'invoke-streamed',