types(withKeys): improve return type withKeys and withModifiers

[pikax]

No description provided.

[pikax]

/ecosystem-ci run

[github-actions]

Size Report

Bundles

File	Size	Gzip	Brotli
runtime-dom.global.prod.js	86.7 kB	33 kB	29.8 kB
vue.global.prod.js	133 kB	49.8 kB	44.6 kB

Usages

Name	Size	Gzip	Brotli
createApp	48.2 kB	19 kB	17.4 kB
createSSRApp	51.5 kB	20.3 kB	18.5 kB
defineCustomElement	50.6 kB	19.7 kB	18 kB
overall	61.6 kB	23.8 kB	21.7 kB

[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	❌ failure
vite-plugin-vue	❌ failure	❌ failure
vitepress	✅ success	✅ success
vue-i18n	✅ success	✅ success
vue-macros	❌ failure	❌ failure
vuetify	✅ success	✅ success
vueuse	❌ failure	❌ failure
vue-simple-compiler	✅ success	✅ success