message: fix: use valid css value for none
diff: @@ -75,7 +75,6 @@ const useIsFirstRender = () => {
  return isFirstRender.current
  }
  -
  export const Skeleton = forwardRef<SkeletonProps, "div">((props, ref) => {
  const styles = useStyleConfig("Skeleton", props)
  const isFirstRender = useIsFirstRender()
  @@ -93,7 +92,7 @@ export const Skeleton = forwardRef<SkeletonProps, "div">((props, ref) => {
  const _className = cx("chakra-skeleton", className)
  if (isLoaded) {
  - const animation = isFirstRender ? null : `${fade} ${fadeDuration}s`
  + const animation = isFirstRender ? "none" : `${fade} ${fadeDuration}s`
  return (
  <chakra.div
  