style: 移除下拉菜单按钮文字单行显示的样式

移除checkinPage和myClassPage中关于.van-dropdown-menu__title的单行显示样式，保持样式一致性

 <!--
   * @Date: 2025-05-29 15:34:17
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-06-28 21:38:42
+ * @LastEditTime: 2025-06-28 21:43:29
  * @FilePath: /mlaj/src/views/teacher/checkinPage.vue
   * @Description: 文件描述
 -->
@@ -849,12 +849,12 @@ const handleAdd = (type) => {
 }
 
 /* 下拉菜单按钮文字单行显示 */
-.van-dropdown-menu__title {
-  white-space: nowrap;
-  overflow: hidden;
-  text-overflow: ellipsis;
-  max-width: 100%;
-}
+// .van-dropdown-menu__title {
+//   white-space: nowrap;
+//   overflow: hidden;
+//   text-overflow: ellipsis;
+//   max-width: 100%;
+// }
 .calendar-checkin {
   .van-calendar__selected-day {
     background: #a2d8a3 !important;

@@ -2,7 +2,7 @@
  * @Author: hookehuyr hookehuyr@gmail.com
  * @Date: 2025-01-20 10:00:00
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-06-27 15:29:06
+ * @LastEditTime: 2025-06-28 21:42:55
  * @FilePath: /mlaj/src/views/teacher/myClassPage.vue
  * @Description: 我的班级页面
 -->
@@ -469,19 +469,19 @@ onUnmounted(() => {
     max-width: 100%;
     flex: 0 0 80%; /* title占80%宽度 */
   }
-  
+
   .van-cell__value {
     flex: 0 0 20%; /* value占20%宽度 */
   }
 }
 
 /* 下拉菜单按钮文字单行显示 */
-.van-dropdown-menu__title {
-  white-space: nowrap;
-  overflow: hidden;
-  text-overflow: ellipsis;
-  max-width: 100%;
-}
+// .van-dropdown-menu__title {
+  // white-space: nowrap;
+  // overflow: hidden;
+  // text-overflow: ellipsis;
+  // max-width: 100%;
+// }
 
 .van-circle {
   font-size: 12px;