[steal] steal vulnerable to Prototype Pollution via alias variable

Prototype pollution vulnerability in stealjs steal via the alias variable in babel.js.

References

• https://nvd.nist.gov/vuln/detail/CVE-2022-37265
• https://github.com/stealjs/steal/issues/1534
• https://github.com/stealjs/steal/blob/c9dd1eb19ed3f97aeb93cf9dcea5d68ad5d0ced9/ext/babel.js#L4216
• https://github.com/stealjs/steal/blob/c9dd1eb19ed3f97aeb93cf9dcea5d68ad5d0ced9/ext/babel.js#L4569
• https://github.com/advisories/GHSA-wc4x-qmr2-rj8h