Revert "enabledProperty to run on inputEnabled instead of pickable, https://github.com/phetsims/scenery/issues/1116"
Revert "enabledProperty to run on inputEnabled instead of pickable, https://github.com/phetsims/scenery/issues/1116"

This reverts commit 1af3a31b

phetsims/sun,phetsims/sun,phetsims/sun