message: fix(animation): ignore additive track if self is not animatable.
diff: @@ -429,10 +429,11 @@ class Track {
  // Only apply additive animaiton on INTERPOLABLE SAME TYPE values.
  if (additiveTrack
  - && this.interpolable
  + // If two track both will be animated and have same value format.
  + && this.needsAnimate()
  + && additiveTrack.needsAnimate()
  && arrDim === additiveTrack.arrDim
  && this.isValueColor === additiveTrack.isValueColor
  - && additiveTrack.needsAnimate()
  && !additiveTrack._finished
  ) {
  this._additiveTrack = additiveTrack;
  