fix: fetch Stock UOM from Item if not set (backport #36606) (#36617)

fix: fetch `Stock UOM` from Item if not set (#36606)

(cherry picked from commit 539cfd0)

Co-authored-by: s-aga-r <sagarsharma.s312@gmail.com>

erpnext/manufacturing/doctype/work_order/work_order.json

@@ -405,6 +405,8 @@
    "read_only": 1
   },
   {
+   "fetch_from": "production_item.stock_uom",
+   "fetch_if_empty": 1,
    "fieldname": "stock_uom",
    "fieldtype": "Link",
    "label": "Stock UOM",
@@ -598,7 +600,7 @@
  "image_field": "image",
  "is_submittable": 1,
  "links": [],
- "modified": "2023-06-09 13:20:09.154362",
+ "modified": "2023-08-11 18:35:49.852069",
  "modified_by": "Administrator",
  "module": "Manufacturing",
  "name": "Work Order",
@@ -618,7 +620,6 @@
    "read": 1,
    "report": 1,
    "role": "Manufacturing User",
-   "set_user_permissions": 1,
    "share": 1,
    "submit": 1,
    "write": 1