fix: ensure vi.useRealTimers() is always called in afterEach for update-dsl-modal tests

Co-authored-by: hyoban <38493346+hyoban@users.noreply.github.com>

web/app/components/rag-pipeline/components/update-dsl-modal.spec.tsx

@@ -137,6 +137,7 @@ vi.mock('@/app/components/workflow/constants', () => ({
 afterEach(() => {
   cleanup()
   vi.clearAllMocks()
+  vi.useRealTimers()
 })
 
 describe('UpdateDSLModal', () => {