File Name Support for Learn Guides

[flakey5]

URL:

https://nodejs.github.io/learn/test-runner/collecting-code-coverage

Browser Name:

n/a

Browser Version:

n/a

Operating System:

n/a

How to reproduce the issue:

Re https://openjs-foundation.slack.com/archives/C09EXEEHFKP/p1774740421197399

File names don't appear to be working correctly for learn guides for whatever reason, instead of displaying things like main.js or main.test.js, it shows CJS or CJS (2).

[avivkeller]

Note that the linked page has been temporarily disabled for SEO reasons, and will be re-enabled at some point in the future