[FIX] account: same sequence in different journal clash

When the same sequence is used in different journals (i.e. BNK1 in two
different companies), a clash might happen in the grouping optimization
of the `_compute_name`

closes odoo/odoo#70152

Signed-off-by: Laurent Smet <smetl@users.noreply.github.com>
Signed-off-by: William André (wan) <wan@odoo.com>

addons/account/models/account_move.py

@@ -1117,13 +1117,15 @@ class AccountMove(models.Model):
         # the same counter for multiple groups that might be spread in multiple months.
         final_batches = []
         for journal_group in grouped.values():
+            journal_group_changed = True
             for date_group in journal_group.values():
                 if (
-                    not final_batches
+                    journal_group_changed
                     or final_batches[-1]['format'] != date_group['format']
                     or dict(final_batches[-1]['format_values'], seq=0) != dict(date_group['format_values'], seq=0)
                 ):
                     final_batches += [date_group]
+                    journal_group_changed = False
                 elif date_group['reset'] == 'never':
                     final_batches[-1]['records'] += date_group['records']
                 elif (

addons/account/tests/test_sequence_mixin.py

@@ -202,6 +202,24 @@ class TestSequenceMixin(AccountTestInvoicingCommon):
             ['J1/2010/00002', 'J0/2010/00002', 'J1/2010/00004', 'J1/2010/00003'],
         )
 
+        journals[0].code = 'OLD'
+        journals.flush()
+        journal_same_code = self.env['account.journal'].create([{
+            'name': 'Journal0',
+            'code': 'J0',
+            'type': 'general',
+        }])
+        moves = (
+            self.create_move(date='2010-01-01', journal=journal_same_code, name='J0/2010/00001')
+            + self.create_move(date='2010-01-01', journal=journal_same_code)
+            + self.create_move(date='2010-01-01', journal=journal_same_code)
+            + self.create_move(date='2010-01-01', journal=journals[0])
+        )._post()
+        self.assertEqual(
+            moves.mapped('name'),
+            ['J0/2010/00001', 'J0/2010/00002', 'J0/2010/00003', 'J0/2010/00003'],
+        )
+
     def test_journal_override_sequence_regex(self):
         """There is a possibility to override the regex and change the order of the paramters."""
         self.create_move(date='2020-01-01', name='00000876-G 0002/2020')