refactor: 将Data到ViewModel的转换由App转移至Server端

- 将逻辑转移到Server端后，简化前端逻辑

app/pages/support/contact-us.vue

@@ -7,7 +7,7 @@
     </div>
 
     <div v-if="!pending" class="page-content">
-      <markdown-renderer :content="content.content || ''" />
+      <markdown-renderer :content="contactInfo.content || ''" />
     </div>
     <div v-else class="loading">
       <el-skeleton :rows="5" animated />
@@ -22,9 +22,7 @@
     { label: $t('navigation.support'), to: localePath('/support') },
     { label: $t('navigation.contact-info') },
   ];
-  const { data, pending, error } = await useContactInfo();
-
-  const content = computed(() => toContactInfoView(data.value));
+  const { data: contactInfo, pending, error } = await useContactInfo();
 
   watch(error, (value) => {
     if (value) {