message: Make Connectedness UI button work again using overlay method
diff: @@ -391,7 +391,11 @@ void MapViewState::drawUI()
  */
  void MapViewState::btnToggleConnectednessClicked()
  {
  - mTileMap->toggleShowConnections();
  + auto overlay = mBtnToggleConnectedness.toggled() ? Tile::Overlay::Connectedness : Tile::Overlay::None;
  + for (auto tile : mConnectednessOverlay)
  + {
  + tile->overlay(overlay);
  + }
  }
  