fix(order): add data model name in define schema (#11181)

Add missing data model name in `model.define` in the Order Module where missing, as we need to infer the names in the references we generate

Closes DX-1305

.changeset/rotten-trainers-lie.md

@@ -0,0 +1,5 @@
+---
+"@medusajs/order": patch
+---
+
+fix(order): add data model name in define schema