refactor: dont force issue list options (#31613)

Setting route option forces the filters, only default filters should be
set and not forced for each visit.
diff --git a/erpnext/support/doctype/issue/issue_list.js b/erpnext/support/doctype/issue/issue_list.js
index 5bfecb0..5c9d4ed 100644
--- a/erpnext/support/doctype/issue/issue_list.js
+++ b/erpnext/support/doctype/issue/issue_list.js
@@ -1,11 +1,8 @@
 frappe.listview_settings['Issue'] = {
 	colwidths: {"subject": 6},
 	add_fields: ['priority'],
+	filters: [["status", "=", "Open"]],
 	onload: function(listview) {
-		frappe.route_options = {
-			"status": "Open"
-		};
-
 		var method = "erpnext.support.doctype.issue.issue.set_multiple_status";
 
 		listview.page.add_action_item(__("Set as Open"), function() {