LibWeb: Report exceptions when invoking intersection observer callback

Author: https://github.com/tcl3
Commit: 7a41ab960c
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2739
Reviewed-by: https://github.com/shannonbooth

Libraries/LibWeb/DOM/Document.cpp

@@ -4009,9 +4009,8 @@ void Document::queue_intersection_observer_task()
             auto& callback = observer->callback();
 
             // 5. Invoke callback with queue as the first argument, observer as the second argument, and observer as the callback this value. If this throws an exception, report the exception.
-            auto completion = WebIDL::invoke_callback(callback, observer.ptr(), wrapped_queue, observer.ptr());
-            if (completion.is_abrupt())
-                HTML::report_exception(completion, realm);
+            // NOTE: This does not follow the spec as written precisely, but this is the same thing we do elsewhere and there is a WPT test that relies on this.
+            (void)WebIDL::invoke_callback(callback, observer.ptr(), WebIDL::ExceptionBehavior::Report, wrapped_queue, observer.ptr());
         }
     }));
 }