message: Prevented modification defaults on series creation
diff: @@ -254,7 +254,7 @@ export class ChartApi implements IChartApi, DataUpdatesConsumer<SeriesType> {
  ): ISeriesApi<TSeries> {
  patchPriceFormat(options.priceFormat);
  - const strictOptions = merge(clone(seriesOptionsDefaults), styleDefaults, options) as SeriesOptionsMap[TSeries];
  + const strictOptions = merge(clone(seriesOptionsDefaults), clone(styleDefaults), options) as SeriesOptionsMap[TSeries];
  const series = this._chartWidget.model().createSeries(type, strictOptions);
  const res = new SeriesApi<TSeries>(series, this, this);
  