fix(VNumberInput): allow press delete key

[SonTT19]

Description

fixes #20083

Markup:

<template>
  <v-app>
    <v-container>
      <v-number-input
        v-model.trim="msg"
        :hide-input="false"
        control-variant="stacked"
        suffix="€"
        type="number"
        variant="outlined"
        width="250"
        inset
      />

      {{ msg }}
    </v-container>
  </v-app>
</template>

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

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