### 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 (different) {
				Vector<Device> ndevices;
				for (int i = 0; i < ldevices.size(); i++) {
					Device d;
					d.id = ldevices[i];
					for (int j = 0; j < ea->devices.size(); j++) {
						if (ea->devices[j].id == ldevices[i]) {
							d.description = ea->devices[j].description;
							d.name = ea->devices[j].name;
							d.api_level = ea->devices[j].api_level;
						}
					}
					if (d.description.is_empty()) {
						
						args.clear();
						args.push_back("-s");
						args.push_back(d.id);
						args.push_back("shell");
						args.push_back("getprop");
						int ec2;
						String dp;
						OS::get_singleton()->execute(adb, args, &dp, &ec2);
						Vector<String> props = dp.split("\n");
						String vendor;
						String device;
						d.description = "Device ID: " + d.id + "\n";
						d.api_level = 0;
						for (int j = 0; j < props.size(); j++) {