fix(orchestration): field alias should represent the isList in the result (#5449)

* fix(orchestration): field alias should represent the isList in the result

* push last fix

* Create witty-rocks-heal.md

* Update remote-joiner.ts

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

---------

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

.changeset/witty-rocks-heal.md

@@ -0,0 +1,5 @@
+---
+"@medusajs/orchestration": patch
+---
+
+fix(orchestration): field alias should represent the isList in the result

packages/orchestration/src/joiner/remote-joiner.ts

@@ -30,6 +30,7 @@ export class RemoteJoiner {
     location: string[]
     property: string
     path: string[]
+    isList?: boolean
   }[] = []
 
   private static filterFields(
@@ -389,13 +390,15 @@ export class RemoteJoiner {
         }
 
         if (Array.isArray(currentItems)) {
-          if (currentItems.length < 2) {
+          if (currentItems.length < 2 && !alias.isList) {
             locationItem[alias.property] = currentItems.shift()
           } else {
             locationItem[alias.property] = currentItems
           }
         } else {
-          locationItem[alias.property] = currentItems
+          locationItem[alias.property] = alias.isList
+            ? [currentItems]
+            : currentItems
         }
 
         if (parentRemoveItems !== null) {
@@ -596,6 +599,9 @@ export class RemoteJoiner {
             location: currentPath,
             property: prop,
             path: fullPath,
+            isList: !!serviceConfig.relationships?.find(
+              (relationship) => relationship.alias === fullPath[0]
+            )?.isList,
           })
 
           const extMapping = expands as unknown[]