Use spec-aligned process for resolving history handling during navigation (#34747)

Makes use of the is_initial_about_blank property on Document in order to
determine whether the navigation should create a history entry, or replace
the current history entry.

Signed-off-by: Shane Handley <shanehandley@fastmail.com>

components/script/dom/xmldocument.rs

@@ -57,6 +57,7 @@ impl XMLDocument {
                 None,
                 None,
                 Default::default(),
+                false,
             ),
         }
     }