QOperatingSystemVersion: mark as Q_RELOCATABLE_TYPE

and Q_PRIMITIVE_TYPE-come-Qt-6.

Change-Id: I97bb9add8ed0870fb70c231d6fed6abce8729434
Reviewed-by: Jake Petroules <jake.petroules@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

src/corelib/global/qoperatingsystemversion.h

@@ -123,6 +123,7 @@ private:
 
     static int compare(const QOperatingSystemVersion &v1, const QOperatingSystemVersion &v2);
 };
+Q_DECLARE_TYPEINFO(QOperatingSystemVersion, QT_VERSION < QT_VERSION_CHECK(6, 0, 0) ? Q_RELOCATABLE_TYPE : Q_PRIMITIVE_TYPE);
 
 QT_END_NAMESPACE