diff: rename detector misbehaves with NodeJS chunks

[tstromberg]

See wolfi-dev/os#16881

I'm not sure what the right way to detect and track renames is for this case. I assume there is some JSON file we can read that provides a clue, but in the worst case, we look at content similarity.

https://github.com/chainguard-dev/bincapz/blob/6bcc45f6950efff82a6122105c7594f1664fe710/pkg/action/diff.go#L138 is where the modified code would need to be inserted.

[tstromberg]

possibly related: #92