fix(bundler-vite): add vuepress to client packages list (#1473)

Co-authored-by: meteorlxy <meteor.lxy@foxmail.com>

Author: Mister-Hope

packages/bundler-vite/src/plugins/vuepressMainPlugin.ts

@@ -43,7 +43,9 @@ import 'vuepress/client-app'
     // which should not be optimized in dev mode, and should not be
     // externalized in build ssr mode
     const clientPackages = [
+      // although discouraged, but users may still use `@vuepress/client` directly
       '@vuepress/client',
+      'vuepress',
       ...app.pluginApi.plugins
         // the 'user-config' plugin is created by cli internally
         .filter(({ name }) => name !== 'user-config')