### 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
Dictionary d = p_data;
	TreeItem *item = effects->get_item_at_position(p_point);
	if (!item) {
		return;
	}
	int pos = effects->get_drop_section_at_position(p_point);
	Variant md = item->get_metadata(0);
	int paste_at;
	int bus = d["bus"];
	int effect = d["effect"];
	if (md.get_type() == Variant::INT) {
		paste_at = md;
		if (pos > 0) {
			paste_at++;
		}
		if (bus == get_index() && paste_at > effect) {
			paste_at--;
		}
	} else {