fix: exclude CJS files with file loader (#11889)

[gdethier]

This PR fixes #11889. The change has been tested against the code example provided in the issue:

1. Download the code example
2. Install dependencies
3. Eject
4. Apply the config change described in this PR
5. Run the app and see that it works as expected.
   

Without the change, one would get this instead:

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[vezwork]

This PR is a duplicate of #12021!I believe this would fix #12155. Hoping for this (or another similar PR) to be reviewed and merged!