### 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
if (updating_blends) {
		return;
	}
	if (!animation->has_selectable_items()) {
		return;
	}
	String current = animation->get_item_text(animation->get_selected());
	TreeItem *selected = blend_editor.tree->get_edited();
	if (!selected) {
		return;
	}
	updating_blends = true;
	String to = selected->get_text(0);
	float blend_time = selected->get_range(1);
	float prev_blend_time = player->get_blend_time(current, to);
	EditorUndoRedoManager *undo_redo = EditorUndoRedoManager::get_singleton();
	undo_redo->create_action(TTR("Change Blend Time"));
	undo_redo->add_do_method(player, "set_blend_time", current, to, blend_time);
	undo_redo->add_undo_method(player, "set_blend_time", current, to, prev_blend_time);
	undo_redo->add_do_method(this, "_animation_player_changed", player);
	undo_redo->add_undo_method(this, "_animation_player_changed", player);
	undo_redo->commit_action();
	updating_blends = false;
}
void AnimationPlayerEditor::ensure_visibility() {