Improve fixed width/height/size hit testing

Zhao Yuhang

2024-05-23 6002cd46a2c5a1c2c4afdbf8e491e76f68b9bfd8

 examples/qml/main.qml

@@ -45,7 +45,6 @@
        id: titleBar
        anchors {
            top: parent.top
            topMargin: 1
            left: parent.left
            right: parent.right
        }
@@ -64,6 +63,7 @@
            height: 18
            mipmap: true
            source: "qrc:///app/example.png"
            Component.onCompleted: windowAgent.setSystemButton(WindowAgent.WindowIcon, iconButton)
        }

        Text {