types: fix functional component for h

[sxzz]

• stricter children/slots type
• fix emits/EE type argument of FunctionalComponent

fixes downstream https://github.com/sxzz/vue-simple-props

[github-actions]

Size Report

Bundles

File	Size	Gzip	Brotli
runtime-dom.global.prod.js	89.4 kB	34 kB	30.7 kB
vue.global.prod.js	146 kB	53.3 kB	47.6 kB

Usages

Name	Size	Gzip	Brotli
createApp	49.7 kB	19.5 kB	17.8 kB
createSSRApp	53.1 kB	20.8 kB	19 kB
defineCustomElement	52 kB	20.2 kB	18.5 kB
overall	63.2 kB	24.4 kB	22.2 kB

[yyx990803]

/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
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	✅ success
vuetify	✅ success	✅ success
vueuse	✅ success	✅ success
vue-simple-compiler	✅ success	✅ success