fix!: require sender and message for contact us page (#34707)

* fix: require sender and message for contact us page

* refactor: dont override frappe.send_message from client side

used override_whitelisted_method hook for the same

erpnext/public/js/website_utils.js

@@ -3,18 +3,6 @@
 
 if(!window.erpnext) window.erpnext = {};
 
-// Add / update a new Lead / Communication
-// subject, sender, description
-frappe.send_message = function(opts, btn) {
-	return frappe.call({
-		type: "POST",
-		method: "erpnext.templates.utils.send_message",
-		btn: btn,
-		args: opts,
-		callback: opts.callback
-	});
-};
-
 erpnext.subscribe_to_newsletter = function(opts, btn) {
 	return frappe.call({
 		type: "POST",
@@ -24,6 +12,3 @@ erpnext.subscribe_to_newsletter = function(opts, btn) {
 		callback: opts.callback
 	});
 }
-
-// for backward compatibility
-erpnext.send_message = frappe.send_message;