XMLHttpRequest.abort() does not set readyState to 0

According to the MDN documentation, XMLHttpRequest.abort() method should set readyState property to 0 (UNSENT), but in QML implementation this property is set to 4 (DONE).

Example project is attached. The line 52 of main.qml sets some unreachable host and the following lines start a timeout timer. When this timer is triggered, the request is aborted, and its readyState should be set to 0, but actually it is set to 4.