fix(compiler-sfc): enable prefixIdentifiers by default

[sxzz]

No description provided.

[github-actions]

Size Report

Bundles

File	Size	Gzip	Brotli
runtime-dom.global.prod.js	89.8 kB	34.2 kB	30.8 kB
vue.global.prod.js	147 kB	53.5 kB	47.7 kB

Usages

Name	Size	Gzip	Brotli
createApp	50.2 kB	19.6 kB	17.9 kB
createSSRApp	53.5 kB	20.9 kB	19.1 kB
defineCustomElement	52.5 kB	20.4 kB	18.6 kB
overall	63.9 kB	24.7 kB	22.4 kB

[edison1105]

/ecosystem-ci run

[vue-bot]

📝 Ran ecosystem CI: Open

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

[yyx990803]

parseMode should not be overridable