feat: Enable filtering admin products by variant EAN, UPC, and barcode (#12815)

* Add filters for variant ean, upc, and barcode in product queries and validators

* fix: Omit 'q' field from variants in product list and validation parameters

* Add tests for admin products filtering by variants ean, upc, and barcode

* Add changeset for filter admin products api by variant ean, upc, and barcode

---------

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

packages/medusa/src/api/admin/products/validators.ts

@@ -25,6 +25,9 @@ export const AdminGetProductVariantsParamsFields = z.object({
   id: z.union([z.string(), z.array(z.string())]).optional(),
   manage_inventory: booleanString().optional(),
   allow_backorder: booleanString().optional(),
+  ean: z.union([z.string(), z.array(z.string())]).optional(),
+  upc: z.union([z.string(), z.array(z.string())]).optional(),
+  barcode: z.union([z.string(), z.array(z.string())]).optional(),
   created_at: createOperatorMap().optional(),
   updated_at: createOperatorMap().optional(),
   deleted_at: createOperatorMap().optional(),
@@ -41,9 +44,13 @@ export const AdminGetProductVariantsParams = createFindParams({
   .merge(applyAndAndOrOperators(AdminGetProductVariantsParamsFields))
 
 export const AdminGetProductsParamsDirectFields = z.object({
-  variants: AdminGetProductVariantsParamsFields.merge(
-    applyAndAndOrOperators(AdminGetProductVariantsParamsFields)
-  ).optional(),
+  variants: AdminGetProductVariantsParamsFields.omit({ q: true })
+    .merge(
+      applyAndAndOrOperators(
+        AdminGetProductVariantsParamsFields.omit({ q: true })
+      )
+    )
+    .optional(),
   status: statusEnum.array().optional(),
 })