### 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)

}
	return valid;
#endif 
}
bool EditorExportPlatformIOS::has_valid_project_configuration(const Ref<EditorExportPreset> &p_preset, String &r_error) const {
	String err;
	bool valid = true;
	
	List<ExportOption> options;
	get_export_options(&options);
	for (const EditorExportPlatform::ExportOption &E : options) {
		if (get_export_option_visibility(p_preset.ptr(), E.option.name)) {
			String warn = get_export_option_warning(p_preset.ptr(), E.option.name);
			if (!warn.is_empty()) {
				err += warn + "\n";
				if (E.required) {
					valid = false;
				}
			}
		}
	}
	if (!ResourceImporterTextureSettings::should_import_etc2_astc()) {
		valid = false;
	}
	if (!err.is_empty()) {
		r_error = err;
	}
	return valid;
}
int EditorExportPlatformIOS::get_options_count() const {