### Tested versions

Godot Engine v4.2.stable.official.46dc27791

### System information

Windows 10

### Issue description

When exporting to web, Godot fails with this error in the console:

> scene/main/window.cpp:884 - Attempting to make child window exclusive, but the parent window already has another exclusive child. This window: /root/@<!-- -->EditorNode@<!-- -->17120/@<!-- -->Panel@<!-- -->13/@<!-- -->ProjectExportDialog@<!-- -->559/@<!-- -->VBoxContainer@<!-- -->137/@<!-- -->AcceptDialog@<!-- -->411, parent window: /root/@<!-- -->EditorNode@<!-- -->17120/@<!-- -->Panel@<!-- -->13/@<!-- -->ProjectExportDialog@<!-- -->559, current exclusive child window: /root/@<!-- -->EditorNode@<!-- -->17120/@<!-- -->Panel@<!-- -->13/@<!-- -->ProjectExportDialog@<!-- -->559/@<!-- -->ProgressDialog@<!-- -->17444

![a](https://github.com/godotengine/godot/assets/2000051/bf9d22aa-d3fe-4e11-bff6-c387e740fe90)

This happens for newly created empty projects.


### Steps to reproduce

1. Open the attached project (or create a new project).
2. Project->Export->Export All
3. Observe the console error.  No output files are generated.


### Minimal reproduction project (MRP)

[export_test.zip](https://github.com/godotengine/godot/files/13574810/export_test.zip)

if (device_event["Event"] == "DeviceDetected") {
							Dictionary device_info = device_event["Device"];
							Device nd;
							nd.id = device_info["DeviceIdentifier"];
							nd.name = device_info["DeviceName"].operator String() + " (connected through " + device_event["Interface"].operator String() + ")";
							nd.wifi = device_event["Interface"] == "WIFI";
							nd.simulator = false;
							ldevices.push_back(nd);
						}
					}
				}
			}
		}
		
		if (_check_xcode_install() && (FileAccess::exists("/usr/bin/xcrun") || FileAccess::exists("/bin/xcrun"))) {
			String devices;
			List<String> args;
			args.push_back("simctl");
			args.push_back("list");
			args.push_back("devices");
			args.push_back("-j");
			int ec = 0;
			Error err = OS::get_singleton()->execute("xcrun", args, &devices, &ec, true);
			if (err == OK && ec == 0) {
				Ref<JSON> json;
				json.instantiate();
				err = json->parse(devices);
				if (err == OK) {
					Dictionary data = json->get_data();
					Dictionary devices = data["devices"];