Since the new kanban view [1], the kanban card layout of the channels
had a weird alignment of its inner elements.
This is due to the fact that now the "kanban-box" defined in the arch
is wrapped inside the div.o_kanban_card instead of being merged with it.
[1] 3d6c13ff3f
closes odoo/odoo#95493
Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>