HF RL Explorer

Issue: DataGrid header cells cannot contain interactive controls

Issue: DataGrid header cells cannot contain interactive controls: a task in LegoFlow-SWE (Harbor dataset). When you place an interactive control (like a MenuButton , InfoLabel , or other focusable element) inside a DataGridHeaderCell , keyboard navigation in the grid breaks and the inner controls…

The task

When you place an interactive control (like a `MenuButton`, `InfoLabel`, or other focusable element) inside a `DataGridHeaderCell`, keyboard navigation in the grid breaks and the inner controls cannot be activated with the keyboard.

Part of Lego-X/LegoFlow-SWE.