refactor: 整理组件目录结构

- TransactionDetail, CategoryBillPopup 移入 Transaction/
- BudgetTypeTabs 移入 Budget/
- GlassBottomNav, ModernEmpty 移入 Global/
- Icon, IconSelector, ClassifySelector 等 8 个通用组件移入 Common/
- 更新所有相关引用路径

Web/src/views/budgetV2/modules/SavingsBudgetContent.vue

@@ -362,7 +362,7 @@
 import { ref, computed } from 'vue'
 import BudgetCard from '@/components/Budget/BudgetCard.vue'
 import { BudgetPeriodType } from '@/constants/enums'
-import PopupContainerV2 from '@/components/PopupContainerV2.vue'
+import PopupContainerV2 from '@/components/Common/PopupContainerV2.vue'
 
 // Props
 const props = defineProps({