[FIX] sale: Don't compare id and NewId

On runbot, edit SO131 and change the company
=> traceback

An onchange is triggered (=> self.id is a NewId).
But while recomputing the quantity delivered, a
read_group is performed which gives real ids (int).

The ids are then used to retrieve some so_lines in a
dict where each key is an id (but actually NewId
in onchange) of self.
=> the keys are NewIds but try to get the value with an (int) id
=> KeyError

closes odoo/odoo#34818

Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>

addons/sale/models/sale.py

@@ -1250,7 +1250,8 @@ class SaleOrderLine(models.Model):
 
         # convert uom and sum all unit_amount of analytic lines to get the delivered qty of SO lines
         # browse so lines and product uoms here to make them share the same prefetch
-        lines_map = {line.id: line for line in self}
+        lines = self.browse([item['so_line'][0] for item in data])
+        lines_map = {line.id: line for line in lines}
         product_uom_ids = [item['product_uom_id'][0] for item in data if item['product_uom_id']]
         product_uom_map = {uom.id: uom for uom in self.env['uom.uom'].browse(product_uom_ids)}
         for item in data: