message: fix: legend text.lineHeight option not work
diff: @@ -810,7 +810,7 @@ class ZRText extends Displayable<TextProps> {
  let rectEl: Rect;
  let imgEl: ZRImage;
  - if (isPlainOrGradientBg || (textBorderWidth && textBorderColor)) {
  + if (isPlainOrGradientBg || style.lineHeight || (textBorderWidth && textBorderColor)) {
  // Background is color
  rectEl = this._getOrCreateChild(Rect);
  rectEl.useStyle(rectEl.createStyle()); // Create an empty style.
  @@ -985,6 +985,7 @@ function getStyleText(style: TextStylePropsPart): string {
  function needDrawBackground(style: TextStylePropsPart): boolean {
  return !!(
  style.backgroundColor
  + || style.lineHeight
  || (style.borderWidth && style.borderColor)
  );
  }
  