LibWeb: Use target's global object when creating focus/blur events

Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/d7c6298d8b
Pull-request: https://github.com/SerenityOS/serenity/pull/14816
Reviewed-by: https://github.com/ADKaster
Reviewed-by: https://github.com/linusg ✅

Userland/Libraries/LibWeb/HTML/HTMLElement.cpp

@@ -259,7 +259,7 @@ static void run_focus_update_steps(Vector<JS::Handle<DOM::Node>> old_chain, Vect
         //    with related blur target as the related target.
         if (blur_event_target) {
             // FIXME: Implement the "fire a focus event" spec operation.
-            auto blur_event = UIEvents::FocusEvent::create(verify_cast<DOM::Node>(*blur_event_target).document().window(), HTML::EventNames::blur);
+            auto blur_event = UIEvents::FocusEvent::create(blur_event_target->global_object(), HTML::EventNames::blur);
             blur_event->set_related_target(related_blur_target);
             blur_event_target->dispatch_event(*blur_event);
         }
@@ -302,7 +302,7 @@ static void run_focus_update_steps(Vector<JS::Handle<DOM::Node>> old_chain, Vect
         //    with related focus target as the related target.
         if (focus_event_target) {
             // FIXME: Implement the "fire a focus event" spec operation.
-            auto focus_event = UIEvents::FocusEvent::create(verify_cast<DOM::Node>(*focus_event_target).document().window(), HTML::EventNames::focus);
+            auto focus_event = UIEvents::FocusEvent::create(focus_event_target->global_object(), HTML::EventNames::focus);
             focus_event->set_related_target(related_focus_target);
             focus_event_target->dispatch_event(*focus_event);
         }