fix(attendance): normalize DingTalk match statuses

Store and validate stable English status codes for unmatched, pending, and matched attendance records so import, filtering, and auto-match use the same values.

apps/server/src/attendance/attendance-import.service.ts

@@ -228,7 +228,7 @@ export class AttendanceImportService {
       }
     }
 
-    entity.matchStatus = '未处理';
+    entity.matchStatus = 'unmatched';
     entity.rawData = JSON.stringify(r);
     return entity;
   }