Describe the bug:

When downloading a Lens datatable as CSV the order of the columns in the final file can differ from the original datatable, in particular when there's at least one formula column defined.

I've marked the issue as low priority as the data is correct and there's no formal contract that the columns in the CSV should match the one on the dashboard, but I see how that would be nice to have.

Steps to reproduce:

1. Go the Sample data logs dashboard
2. Download the CSV version from the Errors by host datatable

Expected behavior:

The order of the columns should be the same.

Any additional context:

A first attempt for this fix has bene introduce in 8.13 with #174994 , but then during the refactor in #193780 to support split by metric CSV download a regression was introduced.