Store microtask queues in their global (fixes #18467)

components/script/dom/dissimilaroriginwindow.rs

@@ -63,6 +63,9 @@ impl DissimilarOriginWindow {
                 global_to_clone_from.resource_threads().clone(),
                 timer_event_chan,
                 global_to_clone_from.origin().clone(),
+                // FIXME(nox): The microtask queue is probably not important
+                // here, but this whole DOM interface is a hack anyway.
+                global_to_clone_from.microtask_queue().clone(),
             ),
             window_proxy: JS::from_ref(window_proxy),
             location: Default::default(),