重构会议助手，使用服务端转写

lib/data/services/meeting/meeting_task_service.dart

@@ -179,7 +179,8 @@ class MeetingTaskService extends GetxService {
               {'tasktype': newTasktype},
             );
             if (id == meetingId) {
-              textList = speakerList;
+              List sqlSpeakerList = await SqfliteApi.getMeetingSpeaker(id);
+              textList = List.from(sqlSpeakerList);
               tasktype.value = newTasktype;
             }
           }