fix 离职切换管理

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

@@ -198,6 +198,7 @@ public class WorkGridService : IWorkGridService
         workGrid.ThrowIfNull($"{from}管理的网格不存在");
 
         var beforeGainfo = await _dbContext.Queryable<GainfoEntity>().Where(x => x.Code == from).SingleAsync();
+        beforeGainfo??=await _dbContext.Queryable<GainfoLeaveEntity>().Where(x => x.Code == from).SingleAsync();
         beforeGainfo.ThrowIfNull($"{from}人员不存在");
 
         var gainfo = await _dbContext.Queryable<GainfoEntity>().Where(x => x.Code == to).SingleAsync();