[css-contain] Disable size containment on table elements (#2763)

Closes #2746.

Author: mrego

css-contain-1/Overview.bs

@@ -178,6 +178,7 @@ Types of Containment</h2>
 Size Containment</h3>
 
 	If the element does not generate a <a>principal box</a> (as is the case with ''display: contents'' or ''display: none''),
+	or if the element is a ''table'',
 	or if the element is an <a spec="css-display-3">internal table element</a>,
 	or if the element is an <a spec="css-display-3">internal ruby element</a>,
 	or if the element's <a>principal box</a> is a <a spec="css-display-3" lt="atomic inline">non-atomic</a> <a spec="css-display-3">inline-level</a> box,