[IMP] test_mail: update counters to current runbots state
[IMP] test_mail: update counters to current runbots state

Some counters are a bit higher than real counters; test_mail help counters
are not up to date in some cases.

closes odoo/odoo#29518
ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo