Replace `isCSSRequest` check with `moduleNode.type === 'css'`

[hi-ogawa]

All occurrence of isCSSRequest except getRscCssTransformFilter heuristics can be replaced with type === 'css' check

vite-plugin-react/packages/plugin-rsc/src/plugin.ts

Lines 1518 to 1522 in 758dc73

	// skip transform if no css imports
	const result = esModuleLexer.parse(code)
	if (!result[0].some((i) => i.t === 1 && i.n && isCSSRequest(i.n))) {
	return false
	}

[hi-ogawa]

Also in general, we might also want to check type === 'js' for js specific logic since to skip type: "asset" later on vitejs/vite#20391

[hi-ogawa]

See #647 (comment)