QTreeWidget: mark (is|set)Item(Selected|Hidden|Expanded) as deprecated

QTreeWidget::(is|set)Item(Selected|Hidden|Expanded)() are deprecated
for a long time but not marked as such. Therefore explicitly mark them
as deprecated so they can get removed with Qt6.

Change-Id: Ie4971350de61326811e0788df0d359ed3c442869
Reviewed-by: Konstantin Shegunov <kshegunov@gmail.com>
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/auto/testlib/qabstractitemmodeltester/tst_qabstractitemmodeltester.cpp b/tests/auto/testlib/qabstractitemmodeltester/tst_qabstractitemmodeltester.cpp
index d37d332939..60aa350145 100644
--- a/tests/auto/testlib/qabstractitemmodeltester/tst_qabstractitemmodeltester.cpp
+++ b/tests/auto/testlib/qabstractitemmodeltester/tst_qabstractitemmodeltester.cpp
@@ -79,7 +79,7 @@ void tst_QAbstractItemModelTester::treeWidgetModel()
     root->removeChild(remove);
     QTreeWidgetItem *parent = new QTreeWidgetItem(&widget, QStringList("parent"));
     new QTreeWidgetItem(parent, QStringList("child"));
-    widget.setItemHidden(parent, true);
+    parent->setHidden(true);
 
     widget.sortByColumn(0, Qt::AscendingOrder);
 }