### 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 (!anim_editor->get_track_editor()->has_keying()) {
		return;
	}
	Node3D *s = Object::cast_to<Node3D>(sp);
	if (!s) {
		return;
	}
	anim_editor->get_track_editor()->insert_transform_key(s, p_sub, Animation::TYPE_POSITION_3D, p_key.origin);
	anim_editor->get_track_editor()->insert_transform_key(s, p_sub, Animation::TYPE_ROTATION_3D, p_key.basis.get_rotation_quaternion());
	anim_editor->get_track_editor()->insert_transform_key(s, p_sub, Animation::TYPE_SCALE_3D, p_key.basis.get_scale());
}
void AnimationPlayerEditorPlugin::_update_keying() {
	InspectorDock::get_inspector_singleton()->set_keying(anim_editor->get_track_editor()->has_keying());
}
void AnimationPlayerEditorPlugin::edit(Object *p_object) {
	if (!p_object) {
		return;
	}
	anim_editor->edit(Object::cast_to<AnimationPlayer>(p_object));
}
bool AnimationPlayerEditorPlugin::handles(Object *p_object) const {
	return p_object->is_class("AnimationPlayer");
}
void AnimationPlayerEditorPlugin::make_visible(bool p_visible) {