W-21432256: update change log

Author: amittapalli

packages/commerce-sdk-react/CHANGELOG.md

@@ -1,5 +1,5 @@
 ## v5.1.0-dev
-- Bump commerce-sdk-isomorphic to 5.1.0-unstable-20260226081656
+- Bump commerce-sdk-isomorphic to 5.1.0
 - Add Node 24 support. Drop Node 16 support. [#3652](https://github.com/SalesforceCommerceCloud/pwa-kit/pull/3652)
 - Add Shopper Consents API support [#3674](https://github.com/SalesforceCommerceCloud/pwa-kit/pull/3674)