Auto merge of #25629 - pshaughn:reflect_translate, r=jdm

Implement "translate" attribute

This attribute is almost a straightforward enumerated one, but the getter value inherits from parents when the content attribute is absent, even when the parents are non-HTML elements. This initial commit is using LocalName::from on a static string; once html5ever has a release with "translate" in the built-in local name list, a small change will be needed.

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- [X] These changes fix #25628

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components/script/dom/webidls/HTMLElement.webidl

@@ -12,8 +12,8 @@ interface HTMLElement : Element {
            attribute DOMString title;
   [CEReactions]
            attribute DOMString lang;
-  // [CEReactions]
-  //         attribute boolean translate;
+  [CEReactions]
+           attribute boolean translate;
   // [CEReactions]
   //         attribute DOMString dir;
   readonly attribute DOMStringMap dataset;