Re: [whatwg/webidl] Update DOMException language to reflect standardized stack accessor (PR #1578)

@annevk commented on this pull request.



> +Since {{DOMException}} objects have an \[[ErrorData]] slot, the
+<code>Error.prototype.stack</code> accessor and other {{Error}}-related behaviors
+gated on \[[ErrorData]] apply to them. Additionally, if an implementation gives
+native {{Error}} objects other special powers or nonstandard properties
+(such as <code>line</code> and <code>column</code> properties), it should
+also expose those on {{DOMException}} objects.

```suggestion
Additionally, if an implementation gives native {{Error}} objects other special powers or
nonstandard properties (such as <code>line</code> and <code>column</code> properties),
it should also expose those on {{DOMException}} objects.
```
I don't think we have any business here mentioning `stack` as it's handled at a different layer now.

> @@ -15246,6 +15250,7 @@ Their [=deserialization steps=], given <var>value</var> and <var>serialized</var
 <ol>
     <li>Set <var>value</var>'s [=DOMException/name=] to <var>serialized</var>.\[[Name]].</li>
     <li>Set <var>value</var>'s [=DOMException/message=] to <var>serialized</var>.\[[Message]].</li>
+    <li>Set <var>value</var>.\[[Stack]] to an implementation-defined value derived from <var>serialized</var>.\[[Stack]].</li>

```suggestion
    <li>Set <var>value</var>.\[[Stack]] to <var>serialized</var>.\[[Stack]].</li>
```
We only have to do the implementation-defined bit once. Just like in HTML.

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