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### Issue Details

* **Electron Version:**
  * 10.0.1
  * 10.0.0-beta.10
  * 9.2.1
* **Operating System:**
  * Windows 10 (2004)
  * macOS 10.15.6
* **Last Known Working Electron version:**
  * 10.0.0-beta.9
  * Issue is seen in 10.0.0-beta.10

### Expected Behavior
AudioWorklets can be created and destroyed multiple times while `nodeIntegrationInWorker` is enabled.

### Actual Behavior
AudioWorklet can only be created and destroyed once. Upon creating a second AudioWorklet, the UI hangs indefinitely.

### To Reproduce
Electron Fiddle: https://gist.github.com/samuelmaddock/5430479c0a08eca3f693df2518c9887d

1. Load Audio Worklet examples directory: https://googlechromelabs.github.io/web-audio-samples/audio-worklet/
2. Open a demo and click start.
3. Navigate back and return to the demos directory.
4. Open another demo and click start.

UI should no longer be responsive.

shell/common/node_bindings.cc
DCHECK(task_runner_);
  task_runner_->PostTask(FROM_HERE, base::BindOnce(&NodeBindings::UvRunOnce,
                                                   weak_factory_.GetWeakPtr()));
}
void NodeBindings::WakeupEmbedThread() {
  if (!in_worker_loop())
    uv_async_send(&dummy_uv_handle_);
}
void NodeBindings::EmbedThreadRunner(void* arg) {
  NodeBindings* self = static_cast<NodeBindings*>(arg);
  while (true) {
    
    uv_sem_wait(&self->embed_sem_);
    if (self->embed_closed_)
      break;
    
    
    
    
    
    self->PollEvents();
    if (self->embed_closed_)
      break;
    
    self->WakeupMainThread();
  }
}
}