fix(core-flows, medusa): Prevent cart addresses duplication on update (#13841)

* Allow id field in addresses properties for cart update validator

* Update cart addresses in update step where id is provided, both reference and nested fields

* Add tests

* Add changeset

* Remove unnecessary map step

* Review changes

.changeset/rare-crabs-cheer.md

@@ -0,0 +1,7 @@
+---
+"@medusajs/core-flows": patch
+"@medusajs/medusa": patch
+---
+
+fix(medusa): Allow 'id' in shipping_address and billing_address in validator of store udpate cart route
+fix(core-flows): Update addresses nested fields when 'id' is provided in payload for update-carts step