style(profile): 调整消息页面无数据提示的缩进并添加底部间距

 <!--
  * @Date: 2025-03-24 12:56:07
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-06-12 16:07:46
+ * @LastEditTime: 2025-06-12 16:31:31
  * @FilePath: /mlaj/src/views/profile/MessagesPage.vue
  * @Description: 消息中心页面
 -->
@@ -36,26 +36,28 @@
       </van-list>
 
       <!-- 无数据提示 -->
-    <div
-      v-if="!loading && messages.length === 0"
-      class="flex flex-col items-center justify-center py-12"
-    >
-      <svg
-        xmlns="http://www.w3.org/2000/svg"
-        class="h-16 w-16 text-gray-300"
-        fill="none"
-        viewBox="0 0 24 24"
-        stroke="currentColor"
+      <div
+        v-if="!loading && messages.length === 0"
+        class="flex flex-col items-center justify-center py-12"
       >
-        <path
-          stroke-linecap="round"
-          stroke-linejoin="round"
-          stroke-width="2"
-          d="M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2"
-        />
-      </svg>
-      <p class="mt-4 text-gray-500">暂无消息</p>
-    </div>
+        <svg
+          xmlns="http://www.w3.org/2000/svg"
+          class="h-16 w-16 text-gray-300"
+          fill="none"
+          viewBox="0 0 24 24"
+          stroke="currentColor"
+        >
+          <path
+            stroke-linecap="round"
+            stroke-linejoin="round"
+            stroke-width="2"
+            d="M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2"
+          />
+        </svg>
+        <p class="mt-4 text-gray-500">暂无消息</p>
+      </div>
+
+      <div style="height: 4rem;"></div>
     </div>
   </AppLayout>
 </template>