Before this commit, when user attempts to edit or delete a private event without being an attendee, it raises an access right error. This commit disables edit and delete buttons in this case, in addition to hide event details. task-2151150 Closes https://github.com/odoo/odoo/pull/42569 closes odoo/odoo#42569 Signed-off-by: Alexandre Kühn (aku) <aku@odoo.com>