[cssom-view-1] Duh, c-v doesn't hide the element itself. Thanks, @vmpstr. #6850

Author: tabatkins

cssom-view-1/Overview.bs

@@ -1122,7 +1122,7 @@ Note: The {{DOMRect}} object returned by {{Element/getBoundingClientRect()}} is
 
     1. If |this| does not have an associated [=layout box=],
         return false.
-    1. If |this|, or a [=shadow-inclusive ancestor=] of |this|,
+    1. If a [=shadow-inclusive ancestor=] of |this|
         has ''content-visibility: hidden'',
         return false.
     1. If the {{IsVisibleOptions/checkAriaHidden}} dictionary member of |options|