Before this PR, the `_mockIrWebsocket__updatePresence` route of the
bus mock server could lead to errors when no im status ids were
provided. This commit fixes this issue by ensuring im status ids
were passed before calling `_mockIrWebsocket__getImStatus` method.
Moreover, old longpolling routes were still present on the bus mock
server. This commit removes these routes.
closesodoo/odoo#100583
Signed-off-by: Alexandre Kühn (aku) <aku@odoo.com>