fix(CJS): provide CJS version of to-valid-identiifer

[brettz9]

fix(CJS): provide CJS version of to-valid-identiifer; fixes #1583

[Copilot]

Pull Request Overview

This PR adds support for providing a CJS (CommonJS) version of the to-valid-identifier dependency, which is an ESM-only package. The solution uses Rollup to bundle the ESM package into a CJS format during the build process.

• Introduces Rollup configuration to transpile to-valid-identifier from ESM to CJS
• Updates build script to generate and use the CJS bundle
• Removes escape-string-regexp from the dependency rejection list

Reviewed Changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated no comments.

File	Description
rollup.config.js	New Rollup configuration to bundle to-valid-identifier as CJS
package.json	Adds Rollup dependencies and integrates bundling into build process
.ncurc.cjs	Removes outdated comment about escape-string-regexp conversion

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

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[github-actions]

🎉 This PR is included in version 61.1.9 🎉

The release is available on:

• GitHub release
• npm package (@latest dist-tag)

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