We evaluate properties for the root item in dummy context if
they contain "parent.".
Defining a parent in the dummy context was not working for QML 2,
because there seems to be a shortcut bypassing the metasystem for parent.
Task-number: QTCREATORBUG-15530
Change-Id: I710f1ef36b8c97cc481b9909a775f06d9e03f666
Reviewed-by: Tim Jenssen <tim.jenssen@theqtcompany.com>
c7a6221e6e