Remove more usages of asQWidget()

Adds View::mapTo()

src/qtquick/views/ViewWrapper_qtquick.cpp

@@ -213,7 +213,11 @@ bool ViewWrapper_qtquick::isNull() const
     return m_item.data() == nullptr;
 }
 
-
 void ViewWrapper_qtquick::setWindowTitle(const QString &)
 {
 }
+
+QPoint ViewWrapper_qtquick::mapTo(View *, QPoint) const
+{
+    return {};
+}