next.js

02c02a47 - split out flake detection from utility to detect changed tests (#67611)

split out flake detection from utility to detect changed tests (#67611) This splits out the existing logic for detecting changed/added tests into a separate util, so it can be leveraged by #67612. No changes in functionality, aside from replacing informational logs with `console.log` rather than `console.error` and a tweak to arg parsing.