fix: Fetch email when making Opportunity from Lead (#18373)

diff --git a/erpnext/crm/doctype/lead/lead.js b/erpnext/crm/doctype/lead/lead.js
index cfa7290..122e2b4 100644
--- a/erpnext/crm/doctype/lead/lead.js
+++ b/erpnext/crm/doctype/lead/lead.js
@@ -7,14 +7,8 @@
 erpnext.LeadController = frappe.ui.form.Controller.extend({
 	setup: function () {
 		this.frm.make_methods = {
-			'Quotation': () => erpnext.utils.create_new_doc('Quotation', {
-				'quotation_to': this.frm.doc.doctype,
-				'party_name': this.frm.doc.name
-			}),
-			'Opportunity': () => erpnext.utils.create_new_doc('Opportunity', {
-				'opportunity_from': this.frm.doc.doctype,
-				'party_name': this.frm.doc.name
-			})
+			'Quotation': this.make_quotation,
+			'Opportunity': this.create_opportunity
 		}
 
 		this.frm.fields_dict.customer.get_query = function (doc, cdt, cdn) {