refactor(card-walmart-info): 优化账户添加 modal 样式

- 移除了多余的嵌套 div 结构，简化了模态框的布局
- 调整了按钮位置，使其更加居中和清晰

src/views/card-walmart-info/account/components/add-modal.vue

@@ -59,8 +59,7 @@
       </a-form-item>
     </a-form>
     <template #footer>
-      <div class="footer">
-        <!-- <a-button
+      <!-- <a-button
           v-if="props.id === ''"
           type="secondary"
           status="warning"
@@ -69,13 +68,12 @@
         >
           检测Cookie
         </a-button> -->
-        <div style="float: right">
-          <a-space>
-            <a-button @click="handleCancel">取消</a-button>
-            <a-button type="primary" :loading="loading" @click="handleOk">
-              确定
-            </a-button>
-            <!-- <a-button
+      <a-space>
+        <a-button @click="handleCancel">取消</a-button>
+        <a-button type="primary" :loading="loading" @click="handleOk">
+          确定
+        </a-button>
+        <!-- <a-button
               type="primary"
               :loading="loading"
               :disabled="!renderData.cookieStatus && props.id === ''"
@@ -83,9 +81,7 @@
             >
               确定
             </a-button> -->
-          </a-space>
-        </div>
-      </div>
+      </a-space>
     </template>
   </a-modal>
 </template>