### 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
void _remove_edited_scene(bool p_change_tab = true);
	void _remove_scene(int index, bool p_change_tab = true);
	bool _find_and_save_resource(Ref<Resource> p_res, HashMap<Ref<Resource>, bool> &processed, int32_t flags);
	bool _find_and_save_edited_subresources(Object *obj, HashMap<Ref<Resource>, bool> &processed, int32_t flags);
	void _save_edited_subresources(Node *scene, HashMap<Ref<Resource>, bool> &processed, int32_t flags);
	void _mark_unsaved_scenes();
	void _find_node_types(Node *p_node, int &count_2d, int &count_3d);
	void _save_scene_with_preview(String p_file, int p_idx = -1);
	bool _find_scene_in_use(Node *p_node, const String &p_path) const;
	void _update_dock_containers();
	void _dock_select_input(const Ref<InputEvent> &p_input);
	void _dock_move_left();
	void _dock_move_right();
	void _dock_select_draw();
	void _dock_pre_popup(int p_which);
	void _dock_split_dragged(int ofs);