R62 Fix A1-A6：请假预览全非工作日处理

client/src/api/leave.ts

@@ -90,6 +90,7 @@ export type LeaveWorkingDaysPreview = {
   weekendDayCount: number;
   adjustedWorkdayCount: number;
   calendarApplied: boolean;
+  isNonWorkingRange: boolean;
 };
 
 export type LeaveListQuery = {