[IMP] account_check_printing: improve journal statistics computation performances

PURPOSE

Improve performances of various Odoo code bits.

SPECIFICATIONS

Use a read_group to compute number of checks to print, using a search_count
instead of a search.

LINKS

Task ID-2281297
PR odoo/odoo#53053
PR odoo/enterprise#11299

closes odoo/odoo#56833

Signed-off-by: Nicolas Martinelli (nim) <nim@odoo.com>

addons/account_check_printing/models/account_journal.py

@@ -88,7 +88,7 @@ class AccountJournal(models.Model):
         ]
         return dict(
             super(AccountJournal, self).get_journal_dashboard_datas(),
-            num_checks_to_print=len(self.env['account.payment'].search(domain_checks_to_print))
+            num_checks_to_print=self.env['account.payment'].search_count(domain_checks_to_print),
         )
 
     @api.multi