### 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
String current = _get_current();
	Ref<Animation> anim;
	if (!current.is_empty()) {
		anim = player->get_animation(current);
	}
	switch (p_option) {
		case TOOL_NEW_ANIM: {
			_animation_new();
		} break;
		case TOOL_ANIM_LIBRARY: {
			library_editor->set_animation_player(player);
			library_editor->show_dialog();
		} break;
		case TOOL_DUPLICATE_ANIM: {
			_animation_duplicate();
		} break;
		case TOOL_RENAME_ANIM: {
			_animation_rename();