[FIX] account: no candidate in reconciliation model

Make sure we don't execute the method with an empty list of candidates
to avoid a zero division.

opw-2049881

closes odoo/odoo#35723

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

addons/account/models/account_reconcile_model.py

@@ -544,6 +544,8 @@ class AccountReconcileModel(models.Model):
         '''
         if not self.match_total_amount:
             return True
+        if not candidates:
+            return False
 
         # Match total residual amount.
         total_residual = 0.0