message: fix(animation): fix gradient animation
diff: @@ -543,7 +543,7 @@ class Track {
  target[propName] = {
  type: isLinearGradient ? 'linear' : 'radial',
  x: interpolateNumber(val.x, nextVal.x, w),
  - y: interpolateNumber(val.x, nextVal.x, w),
  + y: interpolateNumber(val.y, nextVal.y, w),
  // TODO performance
  colorStops: map(val.colorStops, (colorStop, idx) => {
  const nextColorStop = nextVal.colorStops[idx];
  