
PASS BroadcastChannel messages from detached iframe to parent should be ignored (BC created before detaching)
PASS BroadcastChannel messages from detached iframe to parent should be ignored (BC created after detaching)
PASS BroadcastChannel messages from parent to detached iframe should be ignored (BC created before detaching)
PASS BroadcastChannel messages from parent to detached iframe should be ignored (BC created after detaching)
PASS BroadcastChannel messages within detached iframe should be ignored (BCs created before detaching)
PASS BroadcastChannel messages within detached iframe should be ignored (BCs created after detaching)