[Fix] Make from_date and to_date for stock balance query report as mandatory fields (#6948)

diff --git a/erpnext/stock/report/stock_balance/stock_balance.js b/erpnext/stock/report/stock_balance/stock_balance.js
index 43b3657..434c092 100644
--- a/erpnext/stock/report/stock_balance/stock_balance.js
+++ b/erpnext/stock/report/stock_balance/stock_balance.js
@@ -8,6 +8,7 @@
 			"label": __("From Date"),
 			"fieldtype": "Date",
 			"width": "80",
+			"reqd": 1,
 			"default": sys_defaults.year_start_date,
 		},
 		{
@@ -15,6 +16,7 @@
 			"label": __("To Date"),
 			"fieldtype": "Date",
 			"width": "80",
+			"reqd": 1,
 			"default": frappe.datetime.get_today()
 		},
 		{