[FIX] sale : get correct button title invoice email

When we have automatic invoicing enabled , the email sent to the user
when he confirms his payment online will contain a button 'View Journal
Entry'

To reproduce the error :
1- Install accounting, website, ecommerce, sales apps
2- Go to website settings and activate automatic invoice
3- Install test payment method and activate it
4- Log out of the current account
5- Make a purchase of any item and confirm the payment
6- You will receive 2 emails , the second one will have the invoice and
it will contain a button View journal entry

The origin of the problem is not providing model_description when
sending the invoice so it will take the display_name of the model
'account.move' by default which is Journal entry.

opw-3271345

closes odoo/odoo#121525

X-original-commit: 8d791167
Signed-off-by: Victor Feyens (vfe) <vfe@odoo.com>
Signed-off-by: Mahdi Cheikh Rouhou (macr) <macr@odoo.com>

addons/sale/models/payment_transaction.py

@@ -133,7 +133,8 @@ class PaymentTransaction(models.Model):
         )
         if not template_id:
             return
-
+        template_id = int(template_id)
+        template = self.env['mail.template'].browse(template_id)
         for tx in self:
             tx = tx.with_company(tx.company_id).with_context(
                 company_id=tx.company_id.id,
@@ -142,9 +143,13 @@ class PaymentTransaction(models.Model):
                 lambda i: not i.is_move_sent and i.state == 'posted' and i._is_ready_to_be_sent()
             )
             invoice_to_send.is_move_sent = True # Mark invoice as sent
-            for invoice in invoice_to_send.with_user(SUPERUSER_ID):
-                invoice.message_post_with_template(
-                    int(template_id),
+            for invoice in invoice_to_send:
+                lang = template._render_lang(invoice.ids)[invoice.id]
+                model_desc = invoice.with_context(lang=lang).type_name
+                invoice.with_context(model_description=model_desc).with_user(
+                    SUPERUSER_ID
+                ).message_post_with_template(
+                    template_id=template_id,
                     email_layout_xmlid='mail.mail_notification_layout_with_responsible_signature',
                 )