### 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
int idx = -1;
	for (int i = 0; i < animation->get_item_count(); i++) {
		if (animation->get_item_text(i) == p_anim) {
			idx = i;
			break;
		}
	}
	ERR_FAIL_COND(idx == -1);
	animation->select(idx);
	_animation_selected(idx);
}
float AnimationPlayerEditor::_get_editor_step() const {