Update CHANGELOG.md with user-facing changes only

Add entry for React Server Components bug fix (#1818) that affects
users of the gem. Exclude documentation and test coverage changes
as per guidelines to keep changelog focused on user-facing changes.

🤖 Generated with [Claude Code](https://claude.ai/code)

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

Author: justin808

CHANGELOG.md

@@ -23,6 +23,10 @@ After a release, please make sure to run `bundle exec rake update_changelog`. Th
 
 Changes since the last non-beta release.
 
+#### Bug Fixes
+
+- **React Server Components**: Fixed bug in resolving `react-server-client-manifest.json` file path. The manifest file path is now correctly resolved using `bundle_js_file_path` for improved configuration flexibility and consistency in bundle management. [PR 1818](https://github.com/shakacode/react_on_rails/pull/1818) by [AbanoubGhadban](https://github.com/AbanoubGhadban)
+
 ### [16.1.0] - 2025-09-23
 
 #### New Features