fix(HR): hide "more" button from team updates

erpnext/hr/page/team_updates/team_updates.js

@@ -36,7 +36,7 @@ frappe.team_updates = {
 				start: me.start
 			},
 			callback: function(r) {
-				if(r.message) {
+				if (r.message && r.message.length > 0) {
 					r.message.forEach(function(d) {
 						me.add_row(d);
 					});
@@ -77,4 +77,4 @@ frappe.team_updates = {
 
 		$(frappe.render_template('team_update_row', data)).appendTo(me.body)
 	}
-}
+}