fix(cypress): scope Cypress configs to CommonJS under ESM root

[JohnyKid123]

Fixes #2224

What changes did you make and why?

Added cypress/package.json with "type": "commonjs" to fix the module compatibility issue caused by the root package's "type": "module" setting.

This allows Cypress to load the existing CommonJS plugin export without renaming any files or changing plugin paths.

How to test

Run:

node -e "console.log(typeof require('./cypress/plugins/index.js'))"

Expected output: function

Verified using a minimal reproduction with Node.js 22.16.0. The full Cypress suite was not run.

Screenshots

Not applicable — configuration-only change.

AI assistance

This fix was prepared with AI assistance. The module-loading behavior was checked locally.

[JohnyKid123]

Hi! I've submitted a fix for #2224.

The PR is ready for review, but the required checks are still pending, and the workflows appear to need approval.

Could a maintainer please take a look when available? Thanks!