### 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 (key_len == 0) {
				continue;
			}
			switch (p_anim->track_get_key_value(i, 0).get_type()) {
				case Variant::QUATERNION: {
					for (int j = 0; j < key_len; j++) {
						Quaternion q = Quaternion(p_anim->track_get_key_value(i, j));
						if (!q.is_normalized()) {
							is_valid = false;
							ERR_BREAK_EDMSG(true, "AnimationPlayer: '" + player->get_name() + "', Animation: '" + player->get_current_animation() + "', Value Track:  '" + p_anim->track_get_path(i) + "' contains unnormalized Quaternion key.");
						}
					}
				} break;
				case Variant::TRANSFORM3D: {
					for (int j = 0; j < key_len; j++) {
						Transform3D t = Transform3D(p_anim->track_get_key_value(i, j));
						if (!t.basis.orthonormalized().is_rotation()) {
							is_valid = false;
							ERR_BREAK_EDMSG(true, "AnimationPlayer: '" + player->get_name() + "', Animation: '" + player->get_current_animation() + "', Value Track:  '" + p_anim->track_get_path(i) + "' contains corrupted basis (some axes are too close other axis or scaled by zero) Transform3D key.");
						}
					}
				} break;
				default: {
				} break;
			}
		}
	}
	return is_valid;
}
void AnimationPlayerEditor::_bind_methods() {