[IMP] account: modifying batch word to pay when doing group payment

When making group payments a payment memo is generated with BATCH prefix but it can be confsing as there is a batch payment feature so I changed the prefix to PAY and the tests also accordingly
task-5231324

Author: vicire1

addons/account/models/company.py

@@ -164,7 +164,7 @@ class ResCompany(models.Model):
             'padding': 5,
             'use_date_range': True,
             'company_id': self.id,
-            'prefix': 'BATCH/%(year)s/',
+            'prefix': 'PAY/%(year)s/',
         }),
     )
 

addons/account/tests/test_account_payment_register.py

@@ -204,7 +204,7 @@ def test_register_payment_single_batch_grouped_keep_open_lower_amount(self):
         })._create_payments()
 
         self.assertRecordValues(payments, [{
-            'memo': Like(f'BATCH/{self.current_year}/...'),
+            'memo': Like(f'PAY/{self.current_year}/...'),
             'payment_method_line_id': self.inbound_payment_method_line.id,
         }])
         self.assertRecordValues(payments.move_id.line_ids.sorted('balance'), [
@@ -237,7 +237,7 @@ def test_register_payment_single_batch_grouped_keep_open_higher_amount(self):
         })._create_payments()
 
         self.assertRecordValues(payments, [{
-            'memo': Like(f'BATCH/{self.current_year}/...'),
+            'memo': Like(f'PAY/{self.current_year}/...'),
             'payment_method_line_id': self.inbound_payment_method_line.id,
         }])
         self.assertRecordValues(payments.move_id.line_ids.sorted('balance'), [
@@ -272,7 +272,7 @@ def test_register_payment_single_batch_grouped_writeoff_lower_amount_debit(self)
         })._create_payments()
 
         self.assertRecordValues(payments, [{
-            'memo': Like(f'BATCH/{self.current_year}/...'),
+            'memo': Like(f'PAY/{self.current_year}/...'),
             'payment_method_line_id': self.inbound_payment_method_line.id,
         }])
         self.assertRecordValues(payments.move_id.line_ids.sorted('balance'), [
@@ -315,7 +315,7 @@ def test_register_payment_single_batch_grouped_writeoff_higher_amount_debit(self
         })._create_payments()
 
         self.assertRecordValues(payments, [{
-            'memo': Like(f'BATCH/{self.current_year}/...'),
+            'memo': Like(f'PAY/{self.current_year}/...'),
             'payment_method_line_id': self.inbound_payment_method_line.id,
         }])
         self.assertRecordValues(payments.move_id.line_ids.sorted('balance'), [