### 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)

String pname = p_package;
	String name = get_valid_basename();
	pname = pname.replace("$genname", name);
	return pname;
}
String EditorExportPlatformAndroid::get_valid_basename() const {
	String basename = GLOBAL_GET("application/config/name");
	basename = basename.to_lower();
	String name;
	bool first = true;
	for (int i = 0; i < basename.length(); i++) {
		char32_t c = basename[i];
		if (is_digit(c) && first) {
			continue;
		}
		if (is_ascii_identifier_char(c)) {
			name += String::chr(c);
			first = false;
		}
	}
	if (name.is_empty()) {
		name = "noname";
	}
	return name;
}
String EditorExportPlatformAndroid::get_assets_directory(const Ref<EditorExportPreset> &p_preset, int p_export_format) const {