### 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
updating = true;
	animation->clear();
	tool_anim->set_disabled(player == nullptr);
	pin->set_disabled(player == nullptr);
	if (!player) {
		AnimationPlayerEditor::get_singleton()->get_track_editor()->update_keying();
		return;
	}
	List<StringName> libraries;
	player->get_animation_library_list(&libraries);
	int active_idx = -1;
	bool no_anims_found = true;
	bool foreign_global_anim_lib = false;
	for (const StringName &K : libraries) {
		if (K != StringName()) {
			animation->add_separator(K);
		}
		
		Ref<AnimationLibrary> anim_library = player->get_animation_library(K);
		if (K == "") {
			foreign_global_anim_lib = EditorNode::get_singleton()->is_resource_read_only(anim_library);
		}
		List<StringName> animlist;
		anim_library->get_animation_list(&animlist);
		for (const StringName &E : animlist) {
			String path = K;
			if (path != "") {
				path += "/";