[FIX] l10n_latam_invoice_document: wrong name on batch post

Have a Peru company setup
Create 2+ draft invoices of mixed type 'Boleta' and 'Factura'
In list view select the created moves and do action>"post entries"

The posted entries will have the same name prefix, either all 'BOL' or
'FFI', depending on the first computed name, the system will use the
same prefix for the remaining move names

opw-2860231

closes odoo/odoo#95271

X-original-commit: d7a5b34e46436f49592ab6706ac33bcf7a3fbf80
Signed-off-by: William André (wan) <wan@odoo.com>

addons/l10n_latam_invoice_document/models/account_move.py

@@ -1,5 +1,7 @@
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
+from collections import defaultdict
+
 from odoo import models, fields, api, _
 from odoo.exceptions import UserError, ValidationError
 from odoo.tools.sql import column_exists, create_column
@@ -67,7 +69,12 @@ class AccountMove(models.Model):
         self.filtered(
             lambda x: x.journal_id.l10n_latam_use_documents and x.l10n_latam_document_type_id
             and not x.l10n_latam_manual_document_number and x.state == 'draft' and not x.posted_before).name = '/'
-        super(AccountMove, self - without_doc_type - manual_documents)._compute_name()
+        # we need to group moves by document type as _compute_name will apply the same name prefix of the first record to the others
+        group_by_document_type = defaultdict(self.env['account.move'].browse)
+        for move in (self - without_doc_type - manual_documents):
+            group_by_document_type[move.l10n_latam_document_type_id.id] += move
+        for group in group_by_document_type.values():
+            super(AccountMove, group)._compute_name()
 
     @api.depends('l10n_latam_document_type_id', 'journal_id')
     def _compute_l10n_latam_manual_document_number(self):