[FIX] account: payment cashbasis' move posted once

Make an invoice with a line having a cashbasis tax
Make a payment at a future date compared to the invoice's date

Before this commit, the cashbasis move attempted to post many times
which could lead to errors when posting is forbidden
(in the case of the french localization)

After this commit, the cashbasis move is posted only once

OPW 1865179
closes #25832

addons/account/models/account_move.py

@@ -1633,15 +1633,15 @@ class AccountPartialReconcile(models.Model):
                                 'amount_currency': self.amount_currency and line.currency_id.round(-line.amount_currency * amount / line.balance) or 0.0,
                                 'partner_id': line.partner_id.id,
                             })
-            if newly_created_move:
-                if move_date > self.company_id.period_lock_date and newly_created_move.date != move_date:
-                    # The move date should be the maximum date between payment and invoice (in case
-                    # of payment in advance). However, we should make sure the move date is not
-                    # recorded before the period lock date as the tax statement for this period is
-                    # probably already sent to the estate.
-                    newly_created_move.write({'date': move_date})
-                # post move
-                newly_created_move.post()
+        if newly_created_move:
+            if move_date > self.company_id.period_lock_date and newly_created_move.date != move_date:
+                # The move date should be the maximum date between payment and invoice (in case
+                # of payment in advance). However, we should make sure the move date is not
+                # recorded before the period lock date as the tax statement for this period is
+                # probably already sent to the estate.
+                newly_created_move.write({'date': move_date})
+            # post move
+            newly_created_move.post()
 
     def _create_tax_basis_move(self):
         # Check if company_journal for cash basis is set if not, raise exception