Before this commit, the ir.cron "Automation Rules: check and execute" crashed
because the "_check" method used get_eval_context where it shouldn't
This is due to b846d1ebe9, which makes _get_eval_context a record's
method, not a model one.
closes odoo/odoo#140153
Signed-off-by: Lucas Perais (lpe) <lpe@odoo.com>