add labels back in because it isn't the default, https://github.com/phetsims/scenery/issues/759, https://github.com/phetsims/scenery/issues/753
add labels back in because it isn't the default, https://github.com/phetsims/scenery/issues/759, https://github.com/phetsims/scenery/issues/753

phetsims/scenery-phet,phetsims/scenery-phet,phetsims/scenery-phet