fix(VAlert): reduce default close button margin

[johnleider]

Motivation and Context

reduce inline margin end

BEFORE:

AFTER:

Markup:

<template>
  <v-app>
    <v-defaults-provider
      :defaults="defaults"
    >
      <div class="ma-4 pa-4 d-flex">
        <div class="me-8">
          <v-alert
            type="info"
            color="#0d66d0"
            theme="dark"
            text="Check the downloads section of your browser for the installer, or find it where you save downloads on your machine."
            closable
            max-width="385"
          />
          <br>
          <br>
          <v-alert
            type="success"
            theme="dark"
            text="Check the downloads section of your browser for the installer, or find it where you save downloads on your machine."
            closable
            max-width="385"
          />
          <br>
          <br>
          <v-alert
            type="warning"
            theme="dark"
            text="Check the downloads section of your browser for the installer, or find it where you save downloads on your machine."
            closable
            max-width="385"
          />
          <br>
          <br>
          <v-alert
            type="error"
            theme="dark"
            text="Check the downloads section of your browser for the installer, or find it where you save downloads on your machine."
            closable
            max-width="385"
          />
        </div>

        <div>
          <v-alert
            type="info"
            color="#0d66d0"
            theme="dark"
            text="Check the downloads section of your browser for the installer, or find it where you save downloads on your machine."
            max-width="385"
          />
          <br>
          <br>
          <v-alert
            type="success"
            theme="dark"
            text="Check the downloads section of your browser for the installer, or find it where you save downloads on your machine."
            max-width="385"
          />
          <br>
          <br>
          <v-alert
            type="warning"
            theme="dark"
            text="Check the downloads section of your browser for the installer, or find it where you save downloads on your machine."
            max-width="385"
          />
          <br>
          <br>
          <v-alert
            type="error"
            theme="dark"
            text="Check the downloads section of your browser for the installer, or find it where you save downloads on your machine."
            max-width="385"
          />
        </div>
      </div>
    </v-defaults-provider>
  </v-app>
</template>

<script setup>
  import { ref } from 'vue'

  const defaults = ref({
    VAlert: {
      // density: 'compact',
    },
  })
</script>