### 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)

_edit_preset(presets->get_current());
}
void ProjectExportDialog::_update_presets() {
	updating = true;
	Ref<EditorExportPreset> current;
	if (presets->get_current() >= 0 && presets->get_current() < presets->get_item_count()) {
		current = get_current_preset();
	}
	int current_idx = -1;
	presets->clear();
	for (int i = 0; i < EditorExport::get_singleton()->get_export_preset_count(); i++) {
		Ref<EditorExportPreset> preset = EditorExport::get_singleton()->get_export_preset(i);
		if (preset == current) {
			current_idx = i;
		}
		String preset_name = preset->get_name();
		if (preset->is_runnable()) {
			preset_name += " (" + TTR("Runnable") + ")";
		}
		preset->update_files();
		presets->add_item(preset_name, preset->get_platform()->get_logo());
	}
	if (current_idx != -1) {
		presets->select(current_idx);
	}
	updating = false;
}
void ProjectExportDialog::_update_export_all() {