update changelog

Author: salesfelipe

CHANGELOG.md

@@ -15,6 +15,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 - Make productSearch and facets send a % of the traffic to our routes on intsch.
 
+### Fixed
+
+- Make the productIdentifier call the intsch when the feature flag is on.
+
 ## [1.86.0] - 2025-10-21
 
 ### Changed