message: adds optional prop to ArtistsGroupedByName component
diff: @@ -6,7 +6,7 @@ import React from "react"
  import { SectionList, TouchableOpacity } from "react-native"
  interface Props {
  - Component: any
  + Component?: any
  data: Array<{
  data: ArtistListItem_artist[]
  letter: string
  