feat: Add exchange return shipping (#8108)

* wip

* finalize tests

* feat: Add exchange return shipping

* add shipping to preview

* test input

* move utils and ignore already inserted shipping method

* use custom price

---------

Co-authored-by: Carlos R. L. Rodrigues <rodrigolr@gmail.com>

packages/medusa/src/api/admin/returns/[id]/shipping-method/route.ts

@@ -1,8 +1,4 @@
 import { createReturnShippingMethodWorkflow } from "@medusajs/core-flows"
-import {
-  ContainerRegistrationKeys,
-  remoteQueryObjectFromString,
-} from "@medusajs/utils"
 import {
   AuthenticatedMedusaRequest,
   MedusaResponse,
@@ -15,26 +11,13 @@ export const POST = async (
 ) => {
   const { id } = req.params
 
-  const remoteQuery = req.scope.resolve(ContainerRegistrationKeys.REMOTE_QUERY)
-
-  await createReturnShippingMethodWorkflow(req.scope).run({
+  const { result: orderPreview } = await createReturnShippingMethodWorkflow(
+    req.scope
+  ).run({
     input: { ...req.validatedBody, return_id: id },
   })
 
-  const queryObject = remoteQueryObjectFromString({
-    entryPoint: "return",
-    variables: {
-      id,
-      filters: {
-        ...req.filterableFields,
-      },
-    },
-    fields: req.remoteQueryConfig.fields,
-  })
-
-  const [orderReturn] = await remoteQuery(queryObject)
-
   res.json({
-    return: orderReturn,
+    order: orderPreview,
   })
 }