fix(VField): use xl border-radius for rounded prop

[yuwu9145]

fixes #19151

Description

Markup:

<template>
  <div class="ma-5">
    <v-combobox
      label="Fruits"
      variant="outlined"
      rounded
      multiple
      chips
      v-model="fruits"
    ></v-combobox>
    <v-combobox
      label="Fruits"
      variant="outlined"
      rounded
      chips
    ></v-combobox>
  </div>
</template>
<script setup>
  const fruits = [
    'Apple',
    'Apricot',
    'Avocado',
    'Banana',
    'Blackberry',
    'Blackcurrant',
    'Blueberry',
    'Boysenberry',
    'Breadfruit',
    'Cantaloupe',
    'Carambola',
    'Cherimoya',
    'Cherry',
    'Clementine',
    'Coconut',
    'Cranberry',
    'Date',
    'Dragonfruit',
    'Durian',
    'Elderberry',
    'Feijoa',
    'Fig',
    'Goji berry',
    'Gooseberry',
    'Grape',
    'Grapefruit',
    'Guava',
    'Honeydew',
    'Huckleberry',
    'Jabuticaba',
    'Jackfruit',
    'Jambul',
    'Jujube',
    'Juniper berry',
    'Kiwi',
    'Kumquat',
    'Lemon',
    'Lime',
    'Longan',
    'Lychee',
    'Mandarin',
    'Mango',
    'Mangosteen',
    'Marionberry',
    'Melon',
    'Miracle fruit',
    'Mulberry',
    'Nectarine',
    'Orange',
    'Papaya',
    'Passionfruit',
    'Peach',
    'Pear',
    'Persimmon',
    'Pineapple',
    'Pitaya',
    'Plantain',
    'Plum',
    'Pomegranate',
    'Pomelo',
    'Prickly pear',
    'Quince',
    'Rambutan',
    'Raspberry',
    'Red currant',
    'Salak',
    'Sapodilla',
    'Sapote',
    'Soursop',
    'Star apple',
    'Star fruit',
    'Strawberry',
    'Surinam cherry',
    'Tamarillo',
    'Tamarind',
    'Tangerine',
    'Tomato',
    'Ugli fruit',
    'Watermelon',
    'White currant',
    'White sapote',
    'Yuzu',
    'Zucchini',
    'Acerola',
    'Ackee',
    'African cucumber',
    'Amla',
    'Bilberry',
    'Camu Camu',
    'Cape gooseberry',
    'Cherries',
    'Cloudberry',
    'Cornelian cherry',
    'Damson',
    'Eggfruit',
    'Elderberry',
    'Feijoa',
    'Guinep',
    'Honeycrisp apple',
    'Ice cream bean',
    'Ilama',
    'Imbe',
    'Jaboticaba',
    'Kaffir lime',
    'Kiwano',
    'Kiwiberry',
    'Loquat',
    'Lucuma',
    'Mamey sapote',
    'Mangaba',
    'Maypop',
    'Medlar',
    'Mirabelle plum',
    'Monstera deliciosa fruit',
    'Mountain soursop',
    'Nance',
    'Nashi pear',
    'Noni',
    'Olive',
    'Pawpaw',
    'Pepino',
    'Physalis',
    'Pineberry',
    'Pink grapefruit',
    'Pitanga',
    'Pluot',
    'Pomato',
    'Purple mangosteen',
    'Raspberry',
    'Red banana',
    'Rose apple',
    'Salmonberry',
    'Santol',
    'Sea buckthorn',
    'Serviceberry',
    'Snake fruit',
    'Soncoya',
    'Strawberry guava',
    'Sugar apple',
    'Sweet lime',
    'Tangelo',
    'Tejocote',
    'Texas persimmon',
    'Thimbleberry',
    'Velvet apple',
    'Wax apple',
    'Wax jambu',
    'White mulberry',
    'Wild grape',
    'Yumberry',
  ]
</script>