fix: Map `Item` image to `Website Item` website_image only if published via UI (v13)

- For v12 Items, `website_image` should be mapped from `Item` to `Website Item`
diff --git a/erpnext/e_commerce/doctype/website_item/website_item.py b/erpnext/e_commerce/doctype/website_item/website_item.py
index 098de02..c0f8c79 100644
--- a/erpnext/e_commerce/doctype/website_item/website_item.py
+++ b/erpnext/e_commerce/doctype/website_item/website_item.py
@@ -1,8 +1,12 @@
 # -*- coding: utf-8 -*-
-# Copyright (c) 2021, Frappe Technologies Pvt. Ltd. and contributors
+# Copyright (c) 2022, Frappe Technologies Pvt. Ltd. and contributors
 # For license information, please see license.txt
 
 import json
+from typing import TYPE_CHECKING, List, Union
+
+if TYPE_CHECKING:
+	from erpnext.stock.doctype.item.item import Item
 
 import frappe
 from frappe import _
@@ -423,7 +427,9 @@
 
 
 @frappe.whitelist()
-def make_website_item(doc, save=True):
+def make_website_item(doc: "Item", save: bool = True) -> Union["WebsiteItem", List[str]]:
+	"Make Website Item from Item. Used via Form UI or patch."
+
 	if not doc:
 		return
 
@@ -450,7 +456,8 @@
 	for field in fields_to_map:
 		website_item.update({field: doc.get(field)})
 
-	if doc.get("image") and not website_item.website_image:
+	# Needed for publishing/mapping via Form UI only
+	if not frappe.flags.in_migrate and (doc.get("image") and not website_item.website_image):
 		website_item.website_image = doc.get("image")
 
 	if not save: