fix(css): prevent commonjs-proxy module been bundled into css chunk w…

[meowtec]

Which will cause minifying css warning.

reproduce

// node_modules/some-package-for-test/index.js
require('./index.css');

// the entry js file
import 'some-package-for-test'

// run build
vite build

// output
warnings when minifying css:
Invalid character(s) 'getAugmentedNamespace from "commonjsHelpers.js"; export default getAugmentedNamespace(test);' at 1:149. Ignoring.
Invalid selector 'import * as test from "/path/project/node_modules/test/index.css"; import' at 1:20. Ignoring.

[zouhangwithsweet]

太棒了~ 解决了我遇到的问题