Update packages/devextreme/testing/tests/DevExpress.ui.widgets/treeViewParts/optionChanged.js

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Dmitry Lavrinovich <52966626+dmlvr@users.noreply.github.com>

Author: dmlvr

packages/devextreme/testing/tests/DevExpress.ui.widgets/treeViewParts/optionChanged.js

@@ -73,7 +73,7 @@ QUnit.test('node should not have disabled class when it was disabled at runtime'
     });
     const instance = $treeView.dxTreeView('instance');
     const $item = $treeView.find('.dx-treeview-item').eq(0);
-    const $itemContent = $treeView.find('.dx-item-content').eq(0);
+    const $itemContent = $treeView.find('.dx-treeview-item-content').eq(0);
 
     instance.option('items[0].disabled', true);
     assert.notOk($item.hasClass('dx-state-disabled'), 'item frame do not have disabled class');