feat: 添加预算类别名称更新功能，优化相关控制器逻辑

Web/src/views/PeriodicRecord.vue

@@ -232,7 +232,7 @@
     </PopupContainer>
 
     <!-- 周期类型选择器 -->
-    <van-popup v-model:show="showPeriodicTypePicker" position="bottom" round>
+    <van-popup v-model:show="showPeriodicTypePicker" position="bottom" round teleport="body">
       <van-picker
         :columns="periodicTypeColumns"
         @confirm="onPeriodicTypeConfirm"
@@ -241,7 +241,7 @@
     </van-popup>
 
     <!-- 星期选择器 -->
-    <van-popup v-model:show="showWeekdaysPicker" position="bottom" round>
+    <van-popup v-model:show="showWeekdaysPicker" position="bottom" round teleport="body">
       <van-picker
         :columns="weekdaysColumns"
         @confirm="onWeekdaysConfirm"
@@ -250,7 +250,7 @@
     </van-popup>
 
     <!-- 日期选择器 -->
-    <van-popup v-model:show="showMonthDaysPicker" position="bottom" round>
+    <van-popup v-model:show="showMonthDaysPicker" position="bottom" round teleport="body">
       <van-picker
         :columns="monthDaysColumns"
         @confirm="onMonthDaysConfirm"

Web/src/views/StatisticsView.vue

@@ -264,7 +264,7 @@
     </van-pull-refresh>
 
     <!-- 月份选择器 -->
-    <van-popup v-model:show="showMonthPicker" position="bottom" round>
+    <van-popup v-model:show="showMonthPicker" position="bottom" round teleport="body">
       <van-date-picker
         v-model="selectedDate"
         title="选择月份"