fix(VField): Apply icon color to clearable icon

[mueller-jens]

Description

fixes #21402

apply iconColor.value to clearable icon

Markup:

<template>
  <v-app>
    <v-container>
      <v-defaults-provider
        :defaults="{ VAutocomplete: { iconColor: '#FF00FF' } }"
      >
        <v-autocomplete
          :items="['one', 'two', 'three' ]"
          v-model="msg"
          variant="outlined"
          clearable
          persistent-clear
        />
      </v-defaults-provider>
    </v-container>
  </v-app>
</template>

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

  const msg = ref('one')
</script>