Follow-up to https://github.com/vercel/next.js/pull/17533 this makes sure the file used to signal release stats should be skipped for a non-release merge is created in a location that is accessible by the stats action and also updates the release action info detection for the new workflow
Noticed a few things that could be updated to make running the stats locally better e.g. if the folder name didn't match the name of the repo in the `stats-config.js` file it would fail to run and the `yarn` cache could break diffing from a cached package being used instead
