🐛 Bug: redundant files in package.json `files`

[michaelfaith]

Bug Report Checklist

• I have tried restarting my IDE and the issue persists.
• I have pulled the latest main branch of the repository.
• I have searched for related issues and found none that matched my issue.

Coming from https://github.com/JoshuaKGoldberg/package-json-validator-cli/pull/8/files#r2292284376

The following files are being generated in the package.json files array, but are redundant (per the npm spec):

• README.md
• LICENSE.md
• package.json

And should CHANGELOG.md be included?

[JoshuaKGoldberg]

Aha, I think I'd made a mental note long ago to do this automatically with the package-json/no-redundant-files ESLint rule. Then never followed up. JoshuaKGoldberg/eslint-plugin-package-json#1231

And should CHANGELOG.md be included?

My vote is no. Although it is convenient to have the changelog available locally:

• Much of its details are online in PRs anyway, so you don't get much more than cursory info
• Longer-lived packages can end up with rather large ones, which add up (CTA's is 227 KB!)