AWC: fix window attribute handler

SineStriker

2025-02-11 e9f790d3533ebaee1f782e91b6e13b2c6375c86a

 examples/qml/main.qml

@@ -1,6 +1,6 @@
import QtQuick 2.15
import QtQuick.Window 2.15
import QtQuick.Controls.Basic 2.15
import QtQuick.Controls 2.15
import Qt.labs.platform 1.1
import QWindowKit 1.0