Fix to enabled status of editor in OvertimeIntervalGrid

prs.desktop/Grids/OvertimeIntervalGrid.cs

@@ -22,7 +22,7 @@ namespace PRSDesktop.Grids
             base.DoReconfigureEditors(grid, items);
 
             var intervalEditor = grid.FindEditor(nameof(OvertimeInterval.Interval));
-            intervalEditor?.SetEnabled(!items.Any(x => x.IntervalType == OvertimeIntervalType.RemainingTime));
+            intervalEditor?.SetEnabled(intervalEditor.IsEnabled && !items.Any(x => x.IntervalType == OvertimeIntervalType.RemainingTime));
         }
 
         // EditorPage BeforeSave