fix possible QWKQuick crash

Zhao Yuhang

2025-05-07 576654b6173e97425411010b2f40b3e9519b85b8

 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