message: minor optimization in IndexIndicator
diff: import { Sans } from "@artsy/palette"
  import { observer } from "mobx-react"
  -import { useContext } from "react"
  +import { useContext, useMemo } from "react"
  import React from "react"
  import { Animated, View } from "react-native"
  import { boxShadow } from "styled-system"
  @@ -18,7 +18,7 @@ export const IndexIndicator: React.FC = observer(() => {
  const entryOpacity = useSpringFade("in")
  const hideOpacity = useSpringValue(state.isZoomedCompletelyOut ? 1 : 0)
  - const opacity = Animated.multiply(entryOpacity, hideOpacity)
  + const opacity = useMemo(() => Animated.multiply(entryOpacity, hideOpacity), [])
  if (images.length === 1) {
  return null
  