fix(VDatePicker): change calendar when date is changed

[SonTT19]

Description

fixes #19421

Markup:

<template>
  <v-container>
    <v-btn @click="d = new Date(2010, 3, 3)">set new date</v-btn>
    <v-row justify="space-around">
      <v-date-picker v-model="d" elevation="1"></v-date-picker>
    </v-row>
  </v-container>
</template>
<script>
  export default {
    data() {
      return {
        d: new Date(2000, 1, 1),
      }
    },
  }
</script>