message: fix up MenuContext types
diff: @@ -252,7 +252,7 @@ declare module '@primer/components' {
  selected?: boolean
  }
  - export interface SelectMenuFooterProps extends CommonProps, Omit<React.HTMLAttributes<HTMLElement>, 'color'> {}
  + export interface SelectMenuFooterProps extends CommonProps, Omit<React.FooterHTMLAttributes<HTMLElement>, 'color'> {}
  export interface SelectMenuDividerProps extends CommonProps, Omit<React.HTMLAttributes<HTMLDivElement>, 'color'> {}
  @@ -273,14 +273,12 @@ declare module '@primer/components' {
  }
  export const SelectMenu: React.FunctionComponent<SelectMenuProps> & {
  - ContextProvider: React.FunctionComponent<{
  - value: {
  + MenuContext: React.FunctionComponent<{
  selectedTab: string | undefined
  setSelectedTab: (selectedTab: string | undefined) => void,
  open: boolean | undefined,
  setOpen: (open: boolean | undefined) => void,
  initialTab: string | undefined
  - }
  }>
  Divider: React.FunctionComponent<SelectMenuDividerProps>
  Filter: React.FunctionComponent<SelectMenuFilterProps>
  