### Godot version

4.0 fb10f45

### System information

Windows 10 x64

### Issue description

Behold, empty TileSet editor, with no TileMap node nor bottom button visible:
![image](https://github.com/godotengine/godot/assets/2223172/0f052770-4946-40eb-a790-a995dbe2599c)
Regression from #72277 (most likely, I didn't test)

### Steps to reproduce

1. Add some Node to your scene
2. Add a TileMap as a child
3. Select TileMap
4. Fold its parent in the scene tree
5. Restart the editor
6. The TileMap selection is restored and so is the folded node, resulting in a weird paradox

### Minimal reproduction project

N/A
if (track_editor->is_snap_enabled()) {
		const String current = player->get_assigned_animation();
		const Ref<Animation> anim = player->get_animation(current);
		ERR_FAIL_COND_V(!anim.is_valid(), 0.0);
		
		return Input::get_singleton()->is_key_pressed(Key::SHIFT) ? anim->get_step() * 0.25 : anim->get_step();
	}
	return 0.0f;
}
void AnimationPlayerEditor::_animation_name_edited() {
	if (player->is_playing()) {
		player->stop();
	}
	String new_name = name->get_text();
	if (!AnimationLibrary::is_valid_animation_name(new_name)) {
		error_dialog->set_text(TTR("Invalid animation name!"));
		error_dialog->popup_centered();
		return;
	}
	if (name_dialog_op == TOOL_RENAME_ANIM && animation->has_selectable_items() && animation->get_item_text(animation->get_selected()) == new_name) {
		name_dialog->hide();
		return;