layout: Fix the pseudo for anonymous tables (#31578)

Anonymous tables should not use legacy pseudos, as the legacy layout
engine had them inherit lots of random properites that lead to bad
layout in the new layout engine.

Co-authored-by: Oriol Brufau <obrufau@igalia.com>

components/layout_2020/table/construct.rs

@@ -84,9 +84,7 @@ impl Table {
             .stylist
             .style_for_anonymous::<Node::ConcreteElement>(
                 &context.shared_context().guards,
-                // TODO: This should be updated for Layout 2020 once we've determined
-                // which styles should be inherited for tables.
-                &PseudoElement::ServoLegacyAnonymousTable,
+                &PseudoElement::ServoAnonymousTable,
                 &parent_info.style,
             );
         let anonymous_info = parent_info.new_replacing_style(anonymous_style.clone());