ButtonGroup: Missing buttongroup in PrimeVuePTOptions

[phamhongphuc]

Describe the bug

https://github.com/primefaces/primevue/blob/4.0.2/packages/primevue/src/config/Config.d.ts

import { createApp } from 'vue';
import PrimeVue, { PrimeVueConfiguration, PrimeVuePTOptions } from 'primevue/config';
import App from './App.vue';

const app = createApp(App);

export const presets: PrimeVuePTOptions = {
  button: {
    root: {
      class: 'custom-button',
    },
  },
  buttongroup: {
    root: {
      class: 'custom-button-group',
    },
  },
};

const config: PrimeVueConfiguration = {
  pt: presets,
  theme: {
    preset: Aura,
  },
};

app.use(PrimeVue, config);

Reproducer

https://stackblitz.com/edit/culur-primevue-4-ts-vite-issue-typescript?file=src%2Fmain.ts

PrimeVue version

4.0.2

Vue version

4.x

Language

TypeScript

Build / Runtime

TypeScript

Browser(s)

No response

Steps to reproduce the behavior

No response

Expected behavior

No response