Fix broken CSV artifact rendering

What does this MR do and why?

This MR fixes broken CSV rendering on Artifact Browse page. Details are on #350581 (closed)

Screenshots or screen recordings

Here is example of error on Artifact with CSV file:

• local GDK URL is http://localhost:3000/hpaluch/csv-artifact-bug/-/jobs/341/artifacts/file/test.csv

How to set up and validate locally

Tip: you can see full example project on my personal namespace:

• https://gitlab.com/hpaluch/csv-artifact-bug
• if you are using GDK you can use my branch: https://gitlab.com/hpaluch/gitlab/-/commits/350581-hpaluch-csv-viewer-seed to seed both project with CSV and artifact with CSV

1. Add any CSV file to your project, for example test.csv with content (see https://gitlab.com/hpaluch/csv-artifact-bug/-/blob/master/test.csv):

   HeaderA,HeaderB
   A,B

2. Create simple CI job that will just pack test.csv as artifact (see https://gitlab.com/hpaluch/csv-artifact-bug/-/blob/master/.gitlab-ci.yml)

   test_bug:
     script:
       - cat test.csv
       - 'wc -l test.csv'
       - 'echo "Go to Artifact -> Browse and select test.csv"'
       - 'echo "You may see err \"Failed to render CSV file for...\""'
       - 'echo "See https://gitlab.com/gitlab-org/gitlab/-/issues/350581"'
     artifacts:
       paths:
         - test.csv

3. Build project with CI

4. Go to artifacts page, click on Browse and click on test.csv, for example try https://gitlab.com/hpaluch/csv-artifact-bug/-/jobs/3822836320/artifacts/file/test.csv

5. You will see error like one below (screenshot is from latest GDK):

   

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #350581 (closed)