Menu: 'class' prop doesnt' work in submenuheader

[bunomonteiro]

Describe the bug

The submenuheader slot on Menu uses MenuItem object, but the prop class is ignored.

Reproducer

https://codesandbox.io/p/sandbox/exciting-golick-jkw6vh

PrimeVue version

3.36.0

Vue version

3.x

Language

ALL

Build / Runtime

Nuxt

Browser(s)

No response

Steps to reproduce the behavior

<template>
  <Menu :model="items" />
</template>

<script setup>
import { ref } from "vue";

const items = ref([
  { 
    label: 'Item 1',
    class: 'some-submenu-header-class',
    items: [{ 
      label: 'Item 1.1', 
      class: 'some-submenu-item-class'
    }]
  }
]);
</script>

Expected behavior

I expect the submenu header to have the class "some-submenu-header-class" just like the submenu item has the class "some-submenu-item-class"

<ul class="p-menu-list p-reset" role="menu" tabindex="0" data-pc-section="menu">
  <li class="p-submenu-header some-submenu-header-class" role="none" data-pc-section="submenuheader">
    Item 1
  </li>
  <li class="p-menuitem some-submenu-item-class" role="menuitem" aria-label="Item 1.1" data-pc-section="menuitem">
    Item 1.1
  </li>
</ul>