chore(OverflowMenu): hoist menu options nodes (#465)
chore(OverflowMenu): hoist menu options nodes (#465)

* chore(OverflowMenu): hoist menu options nodes

Refs #420.

* chore(OverflowMenu): rename variable to make it more idiomatic

jzhang300/carbon-components-react,carbon-design-system/carbon-components,joshblack/carbon-components-react,carbon-design-system/carbon-components,joshblack/carbon-components-react,carbon-design-system/carbon-components,carbon-design-system/carbon-components-react,carbon-design-system/carbon-components-react