fix(medusa,product): fix ordering product categories (#13487)

CLOSES CORE-1191

cc @SteelRazor47

packages/modules/product/src/repositories/product-category.ts

@@ -6,7 +6,7 @@ import {
   ProductTypes,
 } from "@medusajs/framework/types"
 import { DALUtils, isDefined, MedusaError } from "@medusajs/framework/utils"
-import { LoadStrategy, FindOptions as MikroOptions } from "@mikro-orm/core"
+import { FindOptions as MikroOptions, LoadStrategy } from "@mikro-orm/core"
 import { SqlEntityManager } from "@mikro-orm/postgresql"
 import { ProductCategory } from "@models"
 import { UpdateCategoryInput } from "@types"
@@ -21,10 +21,9 @@ export class ProductCategoryRepository extends DALUtils.MikroOrmBaseTreeReposito
   ) {
     const findOptions_ = { ...findOptions }
     findOptions_.options ??= {}
-    findOptions_.options.orderBy = {
+    findOptions_.options.orderBy ??= {
       id: "ASC",
       rank: "ASC",
-      ...findOptions_.options.orderBy,
     }
 
     const fields = (findOptions_.options.fields ??= [])