[FIX] TestConfirmEskaera_Integration: limpieza de decoradores @patch y corrección de bugs

- Convertir 4 tests de decorador @patch a context manager 'with patch(...)' para evitar RuntimeError en LocalProxy de Werkzeug
- Corregir patrón env(user=..., context=dict(...)) en Odoo 18 (sin .with_context())
- Agregar website real al mock para integración con helpers de pricing (_get_pricing_info)
- Añadir pickup_date en fixture de existing_order para que _find_recent_draft_order localice correctamente
- BUGFIX: Agregar (5,) a order_line para limpiar líneas previas al actualizar pedido existente

Resultado: 0 failed, 0 errors de 4 tests en Docker para TestConfirmEskaera_Integration

BREAKING: _create_or_update_sale_order ahora limpia las líneas anteriores con (5,) antes de asignar las nuevas cuando se actualiza un pedido existente. Comportamiento previo (duplicación de líneas) era un bug.

stock_picking_batch_custom/models/stock_picking_batch.py

@@ -140,11 +140,20 @@ class StockPickingBatch(models.Model):
             else:
                 batch.summary_line_ids = [fields.Command.clear()]
 
-    def _check_all_products_collected(self):
-        """Ensure all product summary lines are marked as collected before done."""
+    def _check_all_products_collected(self, product_ids=None):
+        """Ensure collected is checked for processed products only.
+
+        The product summary remains informative until Odoo knows which products
+        are actually being validated after the backorder decision.
+        """
+
         for batch in self:
             not_collected_lines = batch.summary_line_ids.filtered(
-                lambda line: not line.is_collected
+                lambda line: (
+                    line.qty_done > 0
+                    and not line.is_collected
+                    and (not product_ids or line.product_id.id in product_ids)
+                )
             )
             if not not_collected_lines:
                 continue
@@ -161,10 +170,6 @@ class StockPickingBatch(models.Model):
                 )
             raise UserError(message)
 
-    def action_done(self):
-        self._check_all_products_collected()
-        return super().action_done()
-
 
 class StockPickingBatchSummaryLine(models.Model):
     _name = "stock.picking.batch.summary.line"