Revert "Enable New UI by default (#1460)" (#1476)

This reverts commit f0b735f3dd.

src/components/dialog/content/setting/FirstTimeUIMessage.vue

@@ -1,25 +0,0 @@
-<template>
-  <Message
-    v-if="show"
-    class="first-time-ui-message m-2"
-    severity="info"
-    :closable="true"
-    @close="handleClose"
-  >
-    {{ $t('firstTimeUIMessage') }}
-  </Message>
-</template>
-
-<script setup lang="ts">
-import { useSettingStore } from '@/stores/settingStore'
-import Message from 'primevue/message'
-import { computed } from 'vue'
-
-const settingStore = useSettingStore()
-const show = computed(() => !settingStore.exists('Comfy.UseNewMenu'))
-const handleClose = () => {
-  // Explicitly write the current value to the store.
-  const currentValue = settingStore.get('Comfy.UseNewMenu')
-  settingStore.set('Comfy.UseNewMenu', currentValue)
-}
-</script>