Before this commit, the adaptation of Deferred to Promise was not well done Hence, the change in video playing status was not handled correclty i.e. When a video arrives to its end, the next slide or the questions should be displayed After this commit, when a video is finished, the next slides is displayed OPW 2052971 closes odoo/odoo#35863 Signed-off-by: Christophe Simonis <chs@odoo.com>