Do not execute overwritten bindings

Do not execute overwritten bindings

During the construction of an object, internal bindings can be
overwritten by the initialization of objects with outer scope.

To yield the expected result, suppress the evaluation of inner
bindings that are overwritten by outer bindings, during the
completion phase of object creation.

Task-number: QTBUG-23138
Change-Id: I679309543a9b64c774bb99798ad5ccf518726d10
Reviewed-by: Chris Adams <christopher.adams@nokia.com>
Reviewed-by: J-P Nurmi <j-p.nurmi@nokia.com>