feat(DiaryView, DiaryDateActivityService): implement group filtering and enhance activity display

- Added a group filter dropdown in the DiaryView component to allow users to filter group activities by selected group.
- Updated the DiaryDateActivityService to include groupId in the query for maximum orderId, improving activity management.
- Enhanced the display logic for group activities to reflect the selected filter, improving user experience and data clarity.

backend/services/diaryDateActivityService.js

@@ -386,7 +386,8 @@ class DiaryDateActivityService {
         devLog(predefinedActivity);
         const maxOrderId = await GroupActivity.max('orderId', {
             where: {
-                diaryDateActivity: diaryDateActivity.id
+                diaryDateActivity: diaryDateActivity.id,
+                groupId: Number(groupId)
             }
         });
         const nextOrderId = Number.isFinite(maxOrderId) ? (maxOrderId + 1) : 1;