fix(demo): correct data migration on anonymous to authenticated transitions

- Update CHANGELOG.md with fix for demo data migration logic
- Improve consistency between anonymous and authenticated user experiences

Author: fulleni

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## 1.4.0 - Upcoming Release
 
+- **fix(demo)**: correct data migration logic for anonymous to authenticated user transitions
 - **refactor**: improved filter page reset button to clear local selections and disable when not applicable
 - **feat**: auto-scroll to active filter chip in SavedFiltersBar
 - **fix**: resolve bug where applying a modified filter incorrectly selects the original saved filter