[FW][IMP] *: keep batch records creation for better performance.

`Products` and `Stock Move Lines` are main models, for which the creation is batch happens frequently.  Their creation in batch shouldn't be split because of one "create single" override.

closes odoo/odoo#48874

Forward-port-of: odoo/odoo#48838
Signed-off-by: Martin Trigaux (mat) <mat@odoo.com>

addons/hr_expense/models/product_template.py

@@ -9,13 +9,14 @@ class ProductTemplate(models.Model):
 
     can_be_expensed = fields.Boolean(string="Can be Expensed", help="Specify whether the product can be selected in an expense.")
 
-    @api.model
-    def create(self, vals):
-        # When creating an expense product on the fly, you don't expect to
-        # have taxes on it
-        if vals.get('can_be_expensed', False):
-            vals.update({'supplier_taxes_id': False})
-        return super(ProductTemplate, self).create(vals)
+    @api.model_create_multi
+    def create(self, vals_list):
+        for vals in vals_list:
+            # When creating an expense product on the fly, you don't expect to
+            # have taxes on it
+            if vals.get('can_be_expensed', False):
+                vals.update({'supplier_taxes_id': False})
+        return super(ProductTemplate, self).create(vals_list)
 
     @api.onchange('type')
     def _onchange_type_for_expense(self):

addons/mrp_subcontracting/models/stock_move_line.py

@@ -1,14 +1,15 @@
 # -*- coding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
-from odoo import models
+from odoo import api, models
 
 
 class StockMoveLine(models.Model):
     _inherit = 'stock.move.line'
 
-    def create(self, values):
-        records = super(StockMoveLine, self).create(values)
+    @api.model_create_multi
+    def create(self, vals_list):
+        records = super(StockMoveLine, self).create(vals_list)
         records.filtered(lambda ml: ml.move_id.is_subcontract).move_id._check_overprocessed_subcontract_qty()
         return records