fix: reset resolve-package-path caches in PackageInfoCache._clear()
fix: reset resolve-package-path caches in PackageInfoCache._clear()

(cherry picked from commit d382049ffc45f7368d1f1bd9e624e02ce42996a6)

elwayman02/ember-cli,kategengler/ember-cli,elwayman02/ember-cli,jgwhite/ember-cli,kategengler/ember-cli,HeroicEric/ember-cli,ember-cli/ember-cli,jrjohnson/ember-cli,jgwhite/ember-cli,thoov/ember-cli,jgwhite/ember-cli,buschtoens/ember-cli,HeroicEric/ember-cli,thoov/ember-cli,balinterdi/ember-cli,balinterdi/ember-cli,ember-cli/ember-cli,asakusuma/ember-cli,ember-cli/ember-cli,buschtoens/ember-cli,HeroicEric/ember-cli,thoov/ember-cli,jrjohnson/ember-cli,raycohen/ember-cli,asakusuma/ember-cli,thoov/ember-cli,raycohen/ember-cli,HeroicEric/ember-cli,jgwhite/ember-cli