fix: Translate 'mode of payments' in the 'point of sale'. (#39467)

- Due to a language change, the name of 'mode of payments' was not translated in the placeholder.
diff --git a/erpnext/selling/page/point_of_sale/pos_payment.js b/erpnext/selling/page/point_of_sale/pos_payment.js
index 63711c5..588b698 100644
--- a/erpnext/selling/page/point_of_sale/pos_payment.js
+++ b/erpnext/selling/page/point_of_sale/pos_payment.js
@@ -389,7 +389,7 @@
 				df: {
 					label: p.mode_of_payment,
 					fieldtype: 'Currency',
-					placeholder: __('Enter {0} amount.', [p.mode_of_payment]),
+					placeholder: __('Enter {0} amount.', [__(p.mode_of_payment)]),
 					onchange: function() {
 						const current_value = frappe.model.get_value(p.doctype, p.name, 'amount');
 						if (current_value != this.value) {