According to QUIP-18 [1], all example files
should be LicenseRef-Qt-Commercial OR BSD-3-Clause
Example takes precedence over build system
[1]: https://contribute.qt-project.org/quips/18
Pick-to: 6.8
Task-number: QTBUG-121787
Change-Id: Ia60be3cc375a3a16af7e6ea7755a61cfe6e1573b
Reviewed-by: MohammadHossein Qanbari <mohammad.qanbari@qt.io>
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>