Dispose executedEmitter, https://github.com/phetsims/joist/issues/790 https://github.com/phetsims/phet-io/issues/1543
Dispose executedEmitter, https://github.com/phetsims/joist/issues/790 https://github.com/phetsims/phet-io/issues/1543

phetsims/tandem,phetsims/tandem,phetsims/tandem