### Godot version

v4.2.dev3.official [013e8e3af]

### System information

Godot v4.2.dev3 - macOS 13.4.1 - Vulkan (Forward+) - integrated Apple M1 - Apple M1 (8 Threads)

### Issue description

The content is empty. In the list `<Select Importer> `should be preselected, if possible. 
Or directly show the settings for "Animation Library" (check first selection).


![Bildschirmfoto 2023-08-22 um 01 29 44](https://github.com/godotengine/godot/assets/41921395/8300a756-ff54-4310-a0ad-04ad9525aeb9)


### Steps to reproduce

1. Project
2. Project Settings
3. Import Defaults 

https://github.com/godotengine/godot/assets/41921395/cb263c7d-27f0-4053-a555-0ed03ac7ef2a



### Minimal reproduction project

N/A
_update_importer();
}
void ImportDefaultsEditor::clear() {
	String last_selected;
	if (importers->get_selected() > 0) {
		last_selected = importers->get_item_text(importers->get_selected());
	}
	importers->clear();
	importers->add_item("<" + TTR("Select Importer") + ">");
	importers->set_item_disabled(0, true);
	List<Ref<ResourceImporter>> importer_list;
	ResourceFormatImporter::get_singleton()->get_importers(&importer_list);
	Vector<String> names;
	for (const Ref<ResourceImporter> &E : importer_list) {
		String vn = E->get_visible_name();
		names.push_back(vn);
	}
	names.sort();
	for (int i = 0; i < names.size(); i++) {
		importers->add_item(names[i]);
		if (names[i] == last_selected) {
			importers->select(i + 1);
		}
	}
}
ImportDefaultsEditor::ImportDefaultsEditor() {