Fix transform errors in system tests

[awharn]

What It Does

Adds a list of ignore patterns for transforms to resolve the many informational messages that display during system tests when trying to transform .js, .cjs, and .json files.

How to Test

Review Checklist I certify that I have:

• [x] tested my changes
• [ ] added/updated automated tests
• [ ] updated the changelog
• [x] followed the contribution guidelines

Additional Comments