[FIX] mrp: avoid MemoryError in _get_orderpoint_products

`super()._get_orderpoint_products()` returns more than 1 million
products. Applying _bom_find to all of them is too much.
https://github.com/odoo/odoo/blob/55e327705deed2aa31c1fc9eca49a8a66135c020/addons/stock/models/stock_orderpoint.py#L567-L568

Issue observer on menu Inventory > Operations > Replenishment during
upgrades to 16.0

closes odoo/odoo#109311

X-original-commit: 263cb8eafb3ac0db5cb950e66dba3c924e52f187
Signed-off-by: Arnold Moyaux (arm) <arm@odoo.com>
Signed-off-by: Alvaro Fuentes Suarez (afu) <afu@odoo.com>

addons/mrp/models/stock_warehouse.py

@@ -3,6 +3,7 @@
 
 from odoo import api, fields, models, _
 from odoo.exceptions import ValidationError, UserError
+from odoo.tools import split_every
 
 
 class StockWarehouse(models.Model):
@@ -308,6 +309,9 @@ class Orderpoint(models.Model):
             raise ValidationError(_("A product with a kit-type bill of materials can not have a reordering rule."))
 
     def _get_orderpoint_products(self):
-        products = super()._get_orderpoint_products()
-        kit_products = self.env['mrp.bom']._bom_find(products, bom_type='phantom').keys()
-        return products.filtered(lambda p: p not in kit_products)
+        non_kit_ids = []
+        for products in split_every(2000, super()._get_orderpoint_products().ids, self.env['product.product'].browse):
+            kit_ids = set(k.id for k in self.env['mrp.bom']._bom_find(products, bom_type='phantom').keys())
+            non_kit_ids.extend(id_ for id_ in products.ids if id_ not in kit_ids)
+            products.invalidate_recordset()
+        return self.env['product.product'].browse(non_kit_ids)