[IMP] mail: avoid useless query
[IMP] mail: avoid useless query

Replace `model.search([('id', 'in', ids)])` by `model.browse(ids)`, which is
safe because `ids` come from reading a many2one field.  The performance impact
is negligible.

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo