### 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)

else {
				buf[buf_size++] = cur;
				if (buf_size == 128) {
					result.write[res_size++] = (uint8_t)(buf_size - 1);
					memcpy(&result.write[res_size], &buf, buf_size);
					res_size += buf_size;
					buf_size = 0;
				
			
		 else {
			buf[buf_size++] = cur;
			result.write[res_size++] = (uint8_t)(buf_size - 1);
			memcpy(&result.write[res_size], &buf, buf_size);
			res_size += buf_size;
			buf_size = 0;
		
		i++;
	
	int ofs = p_dest.size();
	p_dest.resize(p_dest.size() + res_size);
	memcpy(&p_dest.write[ofs], result.ptr(), res_size);
void EditorExportPlatformMacOS::_make_icon(const Ref<EditorExportPreset> &p_preset, const Ref<Image> &p_icon, Vector<uint8_t> &p_data) {
	Vector<uint8_t> data;
	data.resize(8);
	data.write[0] = 'i';
	data.write[1] = 'c';
	data.write[2] = 'n';
	data.write[3] = 's';
	struct MacOSIconInfo {