#### Remove extra indentation in pseudo-class function (#16572 by @sosukesuzuki)

This change fixes a bug where extra indentation was added when line breaks were included in the argument list of pseudo-class functions like [`:where()`](https://developer.mozilla.org/en-US/docs/Web/CSS/:where), [`:is()`](https://developer.mozilla.org/en-US/docs/Web/CSS/:is), and [`:not`](https://developer.mozilla.org/en-US/docs/Web/CSS/:not).

<!-- prettier-ignore -->
```css
/* Input */
:where(input:not([type="button"], [type="reset"], [type="submit"]), textarea, select) {
    /* CSS here */
}

/* Prettier stable */
:where(
    input:not([type="button"], [type="reset"], [type="submit"]),
    textarea,
    select
  ) {
  /* CSS here */
}

/* Prettier main */
:where(
  input:not([type="button"], [type="reset"], [type="submit"]),
  textarea,
  select
) {
  /* CSS here */
}

```