fix(core-flows): applying product type promotion (#12051)

* fix: applying porduct type promotion

* Create fair-terms-tell.md

---------

Co-authored-by: Oli Juhl <59018053+olivermrbl@users.noreply.github.com>

.changeset/fair-terms-tell.md

@@ -0,0 +1,5 @@
+---
+"@medusajs/core-flows": patch
+---
+
+fix(core-flows): applying product type promotion

packages/core/core-flows/src/cart/utils/fields.ts

@@ -20,6 +20,7 @@ export const cartFieldsForRefreshSteps = [
   "items.product.collection_id",
   "items.product.categories.id",
   "items.product.tags.id",
+  "items.product.type_id",
   "items.variant.id",
   "items.variant.product.id",
   "items.variant.weight",