`redraw_request` is ignored while the system popup menu is shown

Description

Repro

1. Apply the following patch to repeat requesting redraw.

   diff --git a/winit/examples/window.rs b/winit/examples/window.rs
   index f0a8ba9c..9f711890 100644
   --- a/winit/examples/window.rs
   +++ b/winit/examples/window.rs
   @@ -66,7 +66,7 @@ impl ApplicationHandler for App {
                    buffer.present().expect("Failed to present the softbuffer buffer");
   
                    // For contiguous redraw loop you can request a redraw from here.
   -                // window.request_redraw();
   +                surface.window().request_redraw();
                },
                _ => (),
            }
   

2. Run cargo run --example window. At this point, RedrawRequested log continues to repeat.
3. Click the small icon at the left top of the window.
4. System popup menu is opened.
   
5. Click the icon again to close the menu.

Expected behavior

The redraw_requested call is not ignored. The expectation is one of the followings:

• the RedrawRequested log continues to repeat while the menu is shown
• the RedrawRequested log is pending while the menu is shown and is resumed after the menu is closed

Actual behavior

The RedrawRequested log stopped when the popup menu was opened and was never resumed after the menu was closed. The redraw request loop completely stopped.

The timing of RedrawRequested events is not guaranteed, but they must be eventually emitted because request_redraw queues the event. However in this case the redraw request was ignored and the event was dropped.

Windows version

Microsoft Windows [Version 10.0.26200.8655]

Winit version

HEAD 27e17e3f29439d0956e51f92f6e5d5470104e6b6

Reproduce the issue with cargo run --example window after applying the change in winit/examples/window.rs. Start by tracing how repeated RedrawRequested events from request_redraw are handled when the Windows system popup menu opens and closes. Done means redraw requests are not dropped and the loop continues or resumes after the menu closes.