Promote line height in text style created from paragraph style (#4995)

third_party/txt/src/txt/paragraph_style.cc

@@ -25,6 +25,7 @@ TextStyle ParagraphStyle::GetTextStyle() const {
   result.font_family = font_family;
   result.font_size = font_size;
   result.locale = locale;
+  result.height = line_height;
   return result;
 }