feat(components,plugin-grid,types): object-grid honours keyboardNavigation — one roving Tab stop with arrow-key cell navigation, on by default when the grid renders editable; the row-1 booking is struck (objectui#11068)

feat(components,plugin-grid,types): object-grid honours keyboardNavigation — one roving Tab stop with arrow-key cell navigation, on by default when the grid renders editable; the row-1 booking is struck (objectui#11068) #6111