message: use correct node for material editor search widget
diff: @@ -2173,12 +2173,11 @@ void MainWindow::buildWindowMaterialEditor()
  return;
  }
  - auto &world = frame->child("world");
  static std::vector<sg::NodeType> types{sg::NodeType::MATERIAL};
  static SearchWidget searchWidget(types, types);
  - searchWidget.addSearchBarUI(world);
  - searchWidget.addSearchResultsUI(world);
  + searchWidget.addSearchBarUI(*baseMaterialRegistry);
  + searchWidget.addSearchResultsUI(*baseMaterialRegistry);
  ImGui::End();
  }
  