make sure that the hotkeys only include a single key instead of checking that one of the hotkeys is down, see https://github.com/phetsims/scenery/issues/1334 and https://github.com/phetsims/scenery/issues/1331
make sure that the hotkeys only include a single key instead of checking that one of the hotkeys is down, see https://github.com/phetsims/scenery/issues/1334 and https://github.com/phetsims/scenery/issues/1331

phetsims/scenery,phetsims/scenery,phetsims/scenery