perf(cli): remove Node.js semver checker

[chenjiahan]

Summary

Since Rspack already uses the engines filed to limit the minimal Node.js version, it seems unnecessary to run semver to check the Node.js version at runtime.

Removing the semver() calls can make Rspack CLI 30~40ms faster in all cases.

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

[netlify]

✅ Deploy Preview for rspack canceled.

Name	Link
🔨 Latest commit	6a1eda5
🔍 Latest deploy log	https://app.netlify.com/sites/rspack/deploys/676d25ed7dae0c0008ca51f4

[codspeed-hq]

CodSpeed Performance Report

Merging #8855 will not alter performance

_{Comparing cli_semver_1226 (6a1eda5) with main (7707956)}

Summary

✅ 3 untouched benchmarks