fix(core-flows, link-modules): return fulfillment creation (#12227)

* fix: return fulfillment creation

* chore: changeset

* fix: link

* fix: cancel claim flow

* chore: test fulfillment creation as a part of return lifecycle test

* fix: exchanges cancle flow

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

.changeset/smart-zoos-flash.md

@@ -0,0 +1,5 @@
+---
+"@medusajs/core-flows": patch
+---
+
+fix(core-flows, link-modules): return fulfillment creation