fix: add order_by explicitly for lead (#22820)

diff --git a/erpnext/hr/doctype/holiday_list/holiday_list_calendar.js b/erpnext/hr/doctype/holiday_list/holiday_list_calendar.js
index 3cc8dd5..4e188ad 100644
--- a/erpnext/hr/doctype/holiday_list/holiday_list_calendar.js
+++ b/erpnext/hr/doctype/holiday_list/holiday_list_calendar.js
@@ -9,6 +9,7 @@
 		"title": "description",
 		"allDay": "allDay"
 	},
+	order_by: `from_date`,
 	get_events_method: "erpnext.hr.doctype.holiday_list.holiday_list.get_events",
 	filters: [
 		{