Pull request file tree order and diff order are different

Issue Summary

In the new pull request view, the file tree and diff tree order are different.

Steps to Reproduce

1. Open a PR where a single folder in a repository has multiple files changes
2. The PR diff-tree and file tree shows different orders

Expected Results

The diff-tree and file tree should be the same

Actual Results

The diff-tree and file tree are not in order

Workaround

This behaviour doesn't impact any functionally and just impacts the user view. Therefore, no workarounds at this time. We have already taken this as an internal request.