fix(medusa): Assign metadata when creating a draft order or creating a line item (#4662)

When creating a draft order or creating a line item via Postman, filled metadata is not saved, metadata remains null in the API response

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

.changeset/angry-ways-sell.md

@@ -0,0 +1,5 @@
+---
+"@medusajs/medusa": patch
+---
+
+fix(medusa): Assign metadata when creating a draft order or creating a line item

packages/medusa/src/api/routes/admin/draft-orders/create-line-item.ts

@@ -129,6 +129,7 @@ export default async (req, res) => {
         allow_discounts: false,
         unit_price: validated.unit_price || 0,
         quantity: validated.quantity,
+        metadata: validated.metadata,
       })
     }
 

packages/medusa/src/services/draft-order.ts

@@ -334,6 +334,7 @@ class DraftOrderService extends TransactionBaseService {
             allow_discounts: false,
             unit_price: price,
             quantity: item.quantity,
+            metadata: item.metadata,
           })
         })