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While debugging some flakiness in tests that had custom window presentation, I found that the
UIApplication.shared.isIgnoringInteractionEvents
is effective at detecting UIWindow transitions. It is marked as deprecated since iOS13 but there does not seem to be a better way to get the same information, so i've moved it as a main check for all versions.At the same time, I added the
isWindowReady
checks in more places to output better error messages