chore(cli): mode default config by process.env.NODE_ENV

[SoonIter]

Summary

• auto set "mode" by NODE_ENV, remove the hardcoded config
• extract "buildConfig" method

Related issue (if exists)

closes #2280

Types of changes

• [ ] Docs change / Dependency upgrade
• [ ] Bug fix
• [x] New feature / Improvement
• [x] Refactoring
• [ ] Breaking change

Checklist

• [x] I have added changeset via pnpm run changeset.
• [x] I have added tests to cover my changes.

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 9db25ff566668e11feb4e0b13e641b1c88ad0dfd

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 16 packages

Name	Type
@rspack/cli	Patch
benchmarkcase-rspack-react-refresh	Patch
@rspack/postcss-loader	Patch
@rspack/dev-client	Patch
@rspack/dev-middleware	Patch
@rspack/dev-server	Patch
@rspack/plugin-html	Patch
@rspack/plugin-minify	Patch
@rspack/plugin-node-polyfill	Patch
@rspack/core	Patch
@rspack/binding-darwin-arm64	Patch
@rspack/binding-darwin-x64	Patch
@rspack/binding-linux-x64-gnu	Patch
@rspack/binding-win32-x64-msvc	Patch
@rspack/binding	Patch
@rspack/fs	Patch

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[SoonIter]

@h-a-n-a cc

[jerrykingxyz]

LGTM, I will merge it after resolved conflicts