### 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)

args.push_back("create");
	args.push_back(p_dmg_path);
	args.push_back("-volname");
	args.push_back(p_pkg_name);
	args.push_back("-fs");
	args.push_back("HFS+");
	args.push_back("-srcfolder");
	args.push_back(p_app_path_name);
	String str;
	Error err = OS::get_singleton()->execute("hdiutil", args, &str, nullptr, true);
	if (err != OK) {
		add_message(EXPORT_MESSAGE_ERROR, TTR("DMG Creation"), TTR("Could not start hdiutil executable."));
		return err;
	
	bose("hdiutil returned: " + str);
	if (str.find("create failed") != -1) {
		if (str.find("File exists") != -1) {
			add_message(EXPORT_MESSAGE_ERROR, TTR("DMG Creation"), TTR("`hdiutil create` failed - file exists."));
		 else {
			add_message(EXPORT_MESSAGE_ERROR, TTR("DMG Creation"), TTR("`hdiutil create` failed."));
		
		return FAILED;
	
	return OK;
bool EditorExportPlatformMacOS::is_shebang(const String &p_path) const {
	Ref<FileAccess> fb = FileAccess::open(p_path, FileAccess::READ);
	ERR_FAIL_COND_V_MSG(fb.is_null(), false, vformat("Can't open file: \"%s\".", p_path));
	uint16_t magic = fb->get_16();
	return (magic == 0x2123);