On mobile, kanban view always have its custom "menu" bar to cycle
between grouping if the kanban view is grouped.
But if the kanban view did not have the class `o_kanban_small_column`
the mobile CSS on record was not applied:
- all columns were always displayed one over the other
- switching tab did not hides other columns and show current one
- the style was the same than desktop (but on mobile and with column
after first "to be loaded)
opw-1827142
closes#23691
Nicolas Lempereur
ceac5d686d