fix(VMenu): Vmenu does not restore focus on enter

[elkofy]

VMenu didn't restore the activators focus on Enter

Description

i added a new condition if the key pressed is Enter and the closeOnContentClick props is disabled.
This change enhanced the use case for vmenu to be used inside forms.
Describe your changes in detail. Why is this change required? What problem does it solve?
If it fixes an open issue, please link to the issue here.
fixes #19206

Markup:

packages/vuetify/dev/Playground.vue

<template>
  <v-app>
    <v-container>
      <v-text-field label="Previous Field" />
      <v-menu v-model="open" :close-on-content-click="false">
        <template #activator="{ props }">
          <v-btn v-bind="props" class="mb-5">Menu</v-btn>
        </template>
        <v-card width="400px">
          <v-text-field v-model="msg" label="Menu Field 1" />
          <v-text-field
            v-model="msg"
            label="Menu Field 2"
            @keydown.enter="open = false"
          />
        </v-card>
      </v-menu>
      <v-text-field label="Next Field" />

      <ol class="ml-4 mt-10">
        <li>Click the menu</li>
        <li>Type into Menu Field 2</li>
        <li>Press Enter</li>
        <li>
          Expected: Menu button is re-focused like it is when pressing Escape
        </li>
        <li>
          Actual: Nothing is re-focused, resetting tab flow to the start of the
          document
        </li>
      </ol>
    </v-container>
  </v-app>
</template>

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

  const msg = ref('Hello World!')
  const open = ref(false)
</script>

[johnleider]

This has weird behavior when you tab into the first input and hit enter.