fix 移除覆盖式save

Src/Dlhis.Basic/WorkGrids/Services/Implements/WorkGridScheduleService.cs

@@ -28,22 +28,14 @@ public class WorkGridScheduleService : IWorkGridScheduleService
     {
         var exists = await _dbContext.Queryable<WorkGridScheduleEntity>()
             .Where(x => x.WorkGridCode == request.WorkGridCode
+                        && x.PeriodType == request.PeriodType
                         && x.Date == request.Date
                         && request.UserCodes.Contains(x.UserCode)
             )
-            .Where(x => x.PeriodType != request.PeriodType)
             .AnyAsync();
 
         exists.ThrowIfTrue("当天已经存在排班人员");
 
-        var data = await _dbContext.Queryable<WorkGridScheduleEntity>()
-            .Where(x => x.WorkGridCode == request.WorkGridCode)
-            .Where(x => x.Date == request.Date)
-            .Where(x => x.PeriodType == request.PeriodType)
-            .ToListAsync();
-
-        await _dbContext.DeleteReallyAsync(data);
-
         var toInserts = request.UserCodes.Select(x => new WorkGridScheduleEntity
         {
             WorkGridCode = request.WorkGridCode,