chore: idempotent cart operations (#13236)

* chore(core-flows): idempotent cart operations

* changeset

* add tests

* revert

* revert route

* promo test

* skip bugs

* fix test

* tests

* avoid workflow name conflict

* prevent nested workflow from being deleted until the top level parent finishes

* remove unused setTimeout

* update changeset

* rm comments

---------

Co-authored-by: adrien2p <adrien.deperetti@gmail.com>

.changeset/lemon-buttons-look.md

@@ -0,0 +1,11 @@
+---
+"@medusajs/workflow-engine-inmemory": minor
+"@medusajs/workflow-engine-redis": minor
+"@medusajs/core-flows": minor
+"@medusajs/medusa": minor
+"@medusajs/orchestration": minor
+"@medusajs/types": minor
+"@medusajs/workflows-sdk": minor
+---
+
+chore(core-flows): idempotent cart operations and nested workflow deletion lifecycle fix