docs(datagrid-web): reorder CHANGELOG to Added → Fixed per Keep a Changelog

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: samuelreichert

packages/pluggableWidgets/datagrid-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 "Custom row key" property in the Advanced section to provide stable row identifiers when using view entities, preventing scroll position loss during data refresh.
+
 ### Fixed
 
 - We fixed an issue where custom content columns ignored the export type setting, causing numbers and dates to always export as text in Excel.
@@ -16,10 +20,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 - We fixed an issue where numbers with more than 15 significant digits lost precision during Excel export. Such values are now exported as text to preserve all digits.
 
-### Added
-
-- We added a "Custom row key" property in the Advanced section to provide stable row identifiers when using view entities, preventing scroll position loss during data refresh.
-
 ## [3.9.0] - 2026-03-23
 
 ### Changed