chore: changelog update

Author: yordan-st

packages/pluggableWidgets/combobox-web/CHANGELOG.md

@@ -6,6 +6,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased]
 
+### Added
+
+- We added a new "On change filter input" event that triggers when users type in the combobox filter field, passing the current filter text as an action variable to enable custom nanoflows/microflows for dynamic filtering scenarios.
+
 ## [2.4.3] - 2025-07-22
 
 ### Fixed