fix(): Order constraint and receive return (#12889)

**What**
- Fix missing `ON DELETE CASCADE` constraint on order credit lines
- Fix `receiveReturn` miss usage
- Make all order integration tests to run and rename them all to `*.spec.ts`
- Fix package.json typo

packages/modules/order/src/migrations/.snapshot-medusa-order.json

@@ -1311,6 +1311,7 @@
             "id"
           ],
           "referencedTableName": "public.order",
+          "deleteRule": "cascade",
           "updateRule": "cascade"
         }
       },

packages/modules/order/src/migrations/Migration20250704120229.ts

@@ -0,0 +1,23 @@
+import { Migration } from "@mikro-orm/migrations"
+
+export class Migration20250704120229 extends Migration {
+  override async up(): Promise<void> {
+    this.addSql(
+      `alter table if exists "order_credit_line" drop constraint if exists "order_credit_line_order_id_foreign";`
+    )
+
+    this.addSql(
+      `alter table if exists "order_credit_line" add constraint "order_credit_line_order_id_foreign" foreign key ("order_id") references "order" ("id") on update cascade on delete cascade;`
+    )
+  }
+
+  override async down(): Promise<void> {
+    this.addSql(
+      `alter table if exists "order_credit_line" drop constraint if exists "order_credit_line_order_id_foreign";`
+    )
+
+    this.addSql(
+      `alter table if exists "order_credit_line" add constraint "order_credit_line_order_id_foreign" foreign key ("order_id") references "order" ("id") on update cascade;`
+    )
+  }
+}

packages/modules/order/src/models/order.ts

@@ -56,7 +56,13 @@ const _Order = model
     }),
   })
   .cascades({
-    delete: ["summary", "items", "shipping_methods", "transactions"],
+    delete: [
+      "summary",
+      "items",
+      "shipping_methods",
+      "transactions",
+      "credit_lines",
+    ],
   })
   .indexes([
     {

packages/modules/order/src/services/order-module-service.ts

@@ -897,13 +897,10 @@ export default class OrderModuleService
       (orderShipping) => orderShipping.shipping_method_id
     )
 
-    await promiseAll([
-      this.orderAddressService_.delete(orderAddressIds, sharedContext),
-      // Delete order changes & actions
-      this.orderChangeService_.delete(orderChangeIds, sharedContext),
-    ])
+    await this.orderAddressService_.delete(orderAddressIds, sharedContext)
+    await this.orderChangeService_.delete(orderChangeIds, sharedContext)
 
-    // Delete order, order items, summary, shipping methods and transactions
+    // Delete order, order items, summary, shipping methods, transactions and credit lines
     await super.deleteOrders(ids, sharedContext)
 
     await promiseAll([
@@ -3653,7 +3650,7 @@ export default class OrderModuleService
   ): Promise<OrderTypes.ReturnDTO> {
     const ret = await this.receiveReturn_(data, sharedContext)
 
-    return await this.retrieveReturn(ret.id, {
+    return await this.retrieveReturn(ret[0].id, {
       relations: [
         "items",
         "items.item",
@@ -3668,7 +3665,7 @@ export default class OrderModuleService
   private async receiveReturn_(
     data: OrderTypes.ReceiveOrderReturnDTO,
     @MedusaContext() sharedContext?: Context
-  ): Promise<any> {
+  ): Promise<any[]> {
     return await BundledActions.receiveReturn.bind(this)(data, sharedContext)
   }