In a kanban arch, have a dropdown that don't have a toggler, just an explicit menu. Before this commit, there was a crash. After this commit, the kanban and the dropdown are correctly rendered. closes odoo/odoo#104019 X-original-commit: 01418c474cb02455660156cf47822588f0554376 Signed-off-by: Lucas Perais (lpe) <lpe@odoo.com>