update transform filter to avoid touching files

[sfc-gh-alisowski]

What changed / motivation ?

Uses the transform.filter api to filter files instead of transform, which can lead to corrupted wasm files (and likely others?)

Linked PR/Issues

Fixes #1470

Additional Context

Screenshots, Tests, Anything Else

Pre-flight checklist

• I have read the contributing guidelines
  Contribution Guidelines
• Performed a self-review of my code

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