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>

packages/modules/workflow-engine-inmemory/integration-tests/__fixtures__/workflow_idempotent.ts

@@ -54,6 +54,7 @@ createWorkflow(
   {
     name: "workflow_idempotent",
     idempotent: true,
+    retentionTime: 20,
   },
   function (input) {
     step_1(input)

packages/modules/workflow-engine-inmemory/integration-tests/__fixtures__/workflow_sync.ts

@@ -1,10 +1,10 @@
+import { isPresent } from "@medusajs/framework/utils"
 import {
   createStep,
   createWorkflow,
   StepResponse,
   WorkflowResponse,
 } from "@medusajs/framework/workflows-sdk"
-import { isPresent } from "@medusajs/framework/utils"
 
 const step_1 = createStep(
   "step_1",
@@ -53,6 +53,7 @@ const step_3 = createStep(
 createWorkflow(
   {
     name: "workflow_sync",
+    retentionTime: 20,
     idempotent: true,
   },
   function (input) {