### Preflight Checklist

* [x] I have read the [Contributing Guidelines](https://github.com/electron/electron/blob/master/CONTRIBUTING.md) for this project.
* [x] I agree to follow the [Code of Conduct](https://github.com/electron/electron/blob/master/CODE_OF_CONDUCT.md) that this project adheres to.
* [x] I have searched the issue tracker for an issue that matches the one I want to file, without success.

### Issue Details

* **Electron Version:**
* 9.0.0, 9.2.0, 9.2.1 0 All broken

* **Operating System:**
  * Windows 10 (1809)
* **Last Known Working Electron version:**
  * 8.5.0

### Expected Behavior
When requesting url's and having a socket connect, when it is rejected with proxy authentication required, consistently try again with the proxy authentication credentials.

### Actual Behavior
See logs - good and bad.
In the good logs, electron always makes a 2nd socket request with the proxy authentication headers and succeeds. In the bad logs, electron does not make a 2nd socket request.
Note that for the first socket request on a web page, it works, but when a second socket is opened to make requests it seems to fail.

### To Reproduce
Be behind a NTLM proxy that requires authentication for a domain
Visit a website that makes multiple requests so that multiple sockets are opened.

shell/browser/net/proxying_url_loader_factory.cc
const net::MutableNetworkTrafficAnnotationTag& traffic_annotation,
    mojo::PendingReceiver<network::mojom::URLLoader> loader_receiver,
    mojo::PendingRemote<network::mojom::URLLoaderClient> client)
    : factory_(factory),
      request_(request),
      original_initiator_(request.request_initiator),
      request_id_(web_request_id),
      network_service_request_id_(network_service_request_id),
      view_routing_id_(view_routing_id),
      frame_routing_id_(frame_routing_id),
      options_(options),
      traffic_annotation_(traffic_annotation),
      proxied_loader_receiver_(this, std::move(loader_receiver)),
      target_client_(std::move(client)),
      current_response_(network::mojom::URLResponseHead::New()),
      
      
      
      has_any_extra_headers_listeners_(network_service_request_id != 0) {
  
  target_client_.set_disconnect_handler(base::BindOnce(
      &ProxyingURLLoaderFactory::InProgressRequest::OnRequestError,
      weak_factory_.GetWeakPtr(),
      network::URLLoaderCompletionStatus(net::ERR_ABORTED)));
  proxied_loader_receiver_.set_disconnect_handler(base::BindOnce(
      &ProxyingURLLoaderFactory::InProgressRequest::OnRequestError,
      weak_factory_.GetWeakPtr(),
      network::URLLoaderCompletionStatus(net::ERR_ABORTED)));
}
ProxyingURLLoaderFactory::InProgressRequest::InProgressRequest(