fix(types): correct type inference of union event names

[KazariEX]

fix vuejs/language-tools#4875

[github-actions]

Size Report

Bundles

File	Size	Gzip	Brotli
runtime-dom.global.prod.js	101 kB	38 kB	34.2 kB
vue.global.prod.js	160 kB	58 kB	51.5 kB

Usages

Name	Size	Gzip	Brotli
createApp (CAPI only)	49 kB	18.9 kB	17.2 kB
createApp	55.6 kB	21.4 kB	19.6 kB
createSSRApp	59.6 kB	23.1 kB	21 kB
defineCustomElement	60.4 kB	22.9 kB	20.9 kB
overall	69.3 kB	26.5 kB	24 kB

[pkg-pr-new]

Open in Stackblitz

@vue/compiler-core

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@vue/compiler-sfc

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@vue/compiler-dom

pnpm add https://pkg.pr.new/@vue/compiler-dom@12022

@vue/compiler-ssr

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@vue/reactivity

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@vue/runtime-core

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@vue/runtime-dom

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@vue/server-renderer

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@vue/shared

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@vue/compat

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vue

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commit: d4a6dcc

[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