fix(compiler-sfc): nested css supports atrule and comment

[linzhe141]

close #11896

[github-actions]

Size Report

Bundles

File	Size	Gzip	Brotli
runtime-dom.global.prod.js	100 kB	37.7 kB	34 kB
vue.global.prod.js	159 kB	57.6 kB	51.3 kB

Usages

Name	Size	Gzip	Brotli
createApp (CAPI only)	48.8 kB	18.8 kB	17.2 kB
createApp	55.3 kB	21.2 kB	19.4 kB
createSSRApp	59.3 kB	22.9 kB	20.9 kB
defineCustomElement	60 kB	22.8 kB	20.7 kB
overall	69 kB	26.3 kB	23.9 kB

[pkg-pr-new]

Open in Stackblitz

@vue/compiler-core

pnpm add https://pkg.pr.new/@vue/compiler-core@11899

@vue/compiler-dom

pnpm add https://pkg.pr.new/@vue/compiler-dom@11899

@vue/compiler-sfc

pnpm add https://pkg.pr.new/@vue/compiler-sfc@11899

@vue/reactivity

pnpm add https://pkg.pr.new/@vue/reactivity@11899

@vue/compiler-ssr

pnpm add https://pkg.pr.new/@vue/compiler-ssr@11899

@vue/runtime-core

pnpm add https://pkg.pr.new/@vue/runtime-core@11899

@vue/runtime-dom

pnpm add https://pkg.pr.new/@vue/runtime-dom@11899

@vue/server-renderer

pnpm add https://pkg.pr.new/@vue/server-renderer@11899

@vue/shared

pnpm add https://pkg.pr.new/@vue/shared@11899

@vue/compat

pnpm add https://pkg.pr.new/@vue/compat@11899

vue

pnpm add https://pkg.pr.new/vue@11899

commit: 72857e7

[edison1105]

/ecosystem-ci run

[vue-bot]

📝 Ran ecosystem CI: Open

suite	result	latest scheduled
language-tools	❌ failure	❌ failure
nuxt	✅ success	✅ success
pinia	✅ success	✅ success
primevue	✅ success	✅ success
quasar	✅ success	✅ success
radix-vue	✅ success	✅ success
router	✅ success	✅ success
test-utils	✅ success	✅ success
vant	✅ success	✅ success
vite-plugin-vue	✅ success	✅ success
vitepress	✅ success	✅ success
vue-i18n	✅ success	✅ success
vue-macros	❌ failure	❌ failure
vuetify	✅ success	✅ success
vueuse	✅ success	✅ success
vue-simple-compiler	✅ success	✅ success

[yyx990803]

leave newlines between functions.