Follow-up of https://github.com/odoo/odoo/pull/98160 PR above made single app im_livechat tests sometimes fail with following error: ``` TypeError: LivechatController.livechat_init() missing 1 required positional argument: 'channel_id' ``` This comes from RPC `/im_livechat/init` in frontend, which must provide `channel_id` but somehow doesn't sometimes. This only happens with `test_im_livechat_support_page`, sometimes on runbot. Task-2969488 closes odoo/odoo#99385 Signed-off-by: Sébastien Theys (seb) <seb@odoo.com>