优化考试答题接口，修复多线程触发，考试状态无法变更问题

Tiobon.Core.Services/Ghre/Ghre_ExamRecordServices.cs

@@ -1213,7 +1213,7 @@ public class Ghre_ExamRecordServices : BaseServices<Ghre_ExamRecord, Ghre_ExamRe
         await Update(record, new List<string> { "Status", "Score", "FinallyScore", "AdjustScore", "ActualEndTime", "ScoreStatus", "UpdateTime", "ExamDate", "AnswerCount" }, null, $"Id='{record.Id}'");
 
         if (exampaper.ScoreMethod == DIC_EXAM_PAPER_SCORE_METHOD.SYSTEM)
-            await Task.Factory.StartNew(async () => await DealPass(Db, studyRecordId));
+            await DealPass(Db, studyRecordId);
 
         return ServiceResult.OprateSuccess("提交成功！");
     }

Tiobon.Core.Services/Ghre/Ghre_StudyRecordServices.cs

@@ -1738,7 +1738,7 @@ WHERE A.Id  = '{id}'";
                 .Where(it => it.Id == studyRecordId && it.StaffId == App.User.StaffId)
                 .ExecuteCommandAsync();
 
-        await Task.Factory.StartNew(async () => await GenerateStaffStudyRecord(Db, studyRecordId, duration.Value, attachmentId));
+        await GenerateStaffStudyRecord(Db, studyRecordId, duration.Value, attachmentId);
 
 
         return ServiceResult.OprateSuccess("记录成功！");