Correct license for statically compiled helper file

Pick-to: 6.7
Task-number: QTBUG-121787
Change-Id: I19222cbe8a45a27853933191677f433dd0a60771
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Kai Köhne <kai.koehne@qt.io>

src/corelib/Qt6CoreResourceInit.in.cpp

@@ -1,5 +1,5 @@
 // Copyright (C) 2023 The Qt Company Ltd.
-// SPDX-License-Identifier: BSD-3-Clause
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
 // This file was generated by the qt_add_resources command.