### 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
switch (p_what) {
		case NOTIFICATION_PROCESS: {
			if (!player) {
				return;
			}
			updating = true;
			if (player->is_playing()) {
				{
					String animname = player->get_assigned_animation();
					if (player->has_animation(animname)) {
						Ref<Animation> anim = player->get_animation(animname);
						if (!anim.is_null()) {
							frame->set_max((double)anim->get_length());
						}
					}
				}
				frame->set_value(player->get_current_animation_position());
				track_editor->set_anim_pos(player->get_current_animation_position());
			} else if (!player->is_valid()) {
				
				frame->set_value(0);
			} else if (last_active) {
				
				frame->set_value(player->get_current_animation_position());