On Android, QPlatformMediaDevices is created before main starts executing. This happens because the onAudioInputDevicesUpdated function in QAndroidmediaDevices  is called early at startup, and initializes the QPlatformMediaDevices singleton.

This is a design problem because we end up connecting signals before QCoreApplication has been created, and we don't have a reliable mechanism to make sure events are processed at the expected time.

This prevents implementing fix for QTBUG-121768 and makes tst_qmediadevices more complex than it should be.