FIX. CellClick and CellDoubleClick events fire when clicking on a scrollbar within child views in RadGridView.
1. Create RadGridView with hierarchy.
2. Set UseScrollbarsInHierarchy property to true.
3. Handle the CellDoubleClick event.
4. Run the project, open a child view and double click on its scrollbar. The CellDoubleClick event will fire which is wrong.