fix(language-core): prevent type error when use defineSlots and non-template

[zhiyuanzmj]

No description provided.

[pkg-pr-new]

Open in Stackblitz

vue-component-meta

pnpm add https://pkg.pr.new/vuejs/language-tools/vue-component-meta@4809

@vue/language-core

pnpm add https://pkg.pr.new/vuejs/language-tools/@vue/language-core@4809

vue-component-type-helpers

pnpm add https://pkg.pr.new/vuejs/language-tools/vue-component-type-helpers@4809

@vue/language-plugin-pug

pnpm add https://pkg.pr.new/vuejs/language-tools/@vue/language-plugin-pug@4809

@vue/language-server

pnpm add https://pkg.pr.new/vuejs/language-tools/@vue/language-server@4809

@vue/language-service

pnpm add https://pkg.pr.new/vuejs/language-tools/@vue/language-service@4809

vue-tsc

pnpm add https://pkg.pr.new/vuejs/language-tools/vue-tsc@4809

@vue/typescript-plugin

pnpm add https://pkg.pr.new/vuejs/language-tools/@vue/typescript-plugin@4809

commit: 92a4d13

[johnsoncodehk]

Thanks!