Update rule for nested lists in `normalize.css` and `opinionated.css`

[germanfrelo]

This rule is in both normalize.css and opinionated.css:

/**
 * Remove the margin on nested lists in Chrome, Edge, and Safari.
 */

:where(dl, ol, ul) :where(dl, ol, ul) {
  margin-block-end: 0;
  margin-block-start: 0;
}

I think it can be updated to:

/**
-* Remove the margin on nested lists in Chrome, Edge, and Safari.
+* Remove the margin on nested lists in Chrome and Edge.
 */

-:where(dl, ol, ul) :where(dl, ol, ul) {
+:where(dir, dl, menu, ol, ul) :where(dir, dl, menu, ol, ul) {
  margin-block-end: 0;
  margin-block-start: 0;
}

Explanation:

For one hand, WebKit's UA stylesheet was updated on May 14, 2023 to "Partial Sync UA stylesheet rules as per HTML Spec for 'lists'":

:is(dir, dl, menu, ol, ul) :is(dir, dl, menu, ol, ul) {
    margin-block-start: 0;
    margin-block-end: 0;
}

So I think the ", and Safari" part could be removed from the comment.

On the other hand, Blink (Chrome and Edge) has not yet updated its rule for nested lists:

ol ul, ul ol, ul ul, ol ol {
    margin-block-start: 0;
    margin-block-end: 0
}

which does not include dir, dl, or menu.

The current rule from normalize.css does include dl, but not dir or menu, as Gecko, WebKit, and the HTML spec do. I suggest changing it to match them all for consistency until Blink is updated.

What do you think?