如何删除在 Quarto v1.3 的 calloutblock 中打印 huxtable 时添加的水平线

这是this question中的一个后续问题，我在其中询问了如何在Quarto v1.3中 suppress 表的 bootstrap 布局.解决方案是在块选项中添加#| output: asis，然后在代码末尾添加|> print_html(). 这对于正常使用非常有效.然而，当在标注块中使用时，将表格打印为HTML似乎会禁用标注块. 我找到了一种解决此问题的方法，即省略|> print_html()，如下所示:

---
title: Table style
format: html
---

::: {.callout-important}

Some text about the table

```{r}
#| echo: false
#| warning: false
#| output: asis

library(huxtable)

t1 <-  matrix(c("",            "",   "Success", "",     "", 
                "",            "",   "no",      "yes",  "", 
                "Medication",  "A",  4,         2,      6,
                "",            "B",  2,         5,      7,
                "",            "",   6,         7,      13),
              nrow = 5, byrow = T)

huxtable::as_hux(t1) |> 
  set_bottom_border(row = c(2,4), col = 2:5) |>
  set_bottom_border(row = c(1,5), col = c(3,4)) |>
  
  set_right_border(row = 2:5, col = c(2,4)) |> 
  set_right_border(row = c(3,4), col = c(1,5)) |> 
  
  set_bold(row = 1, col = 3) |> 
  set_bold(row = 3, col = 1) |> 
  
  set_col_width(col = everywhere, 0.2)
```
:::

Again, this works fine, but it generates a grey line above the table, which I'd rather not have: I found, that this is caused by the last code-line set_col_width(), but I absolutely need to set the col-width because the table looks ridiculous without.

有什么办法可以go 掉那条灰色水平线吗？