message: fix(svg): rectText text color when rect has gradient
  Fix and close apache/incubator-echarts#11036.
diff: @@ -242,11 +242,9 @@ SVGPainter.prototype = {
  else if (!item.removed) {
  for (var k = 0; k < item.count; k++) {
  var displayable = newVisibleList[item.indices[k]];
  - prevSvgElement =
  - svgElement =
  - getTextSvgElement(displayable)
  - || getSvgElement(displayable)
  - || prevSvgElement;
  + prevSvgElement = getTextSvgElement(displayable)
  + || getSvgElement(displayable) || prevSvgElement;
  + svgElement = getSvgElement(displayable) || getTextSvgElement(displayable);
  this.gradientManager.markUsed(displayable);
  this.gradientManager
  