fix: Re-add no.of rows split in alert message

(cherry picked from commit 1fc5844025)

erpnext/accounts/doctype/payment_entry/payment_entry.py

@@ -1564,8 +1564,8 @@ def split_invoices_based_on_payment_terms(outstanding_invoices, company) -> list
 					continue
 
 				frappe.msgprint(
-					_("Splitting {0} {1} as per Payment Terms").format(
-						_(entry.voucher_type), frappe.bold(entry.voucher_no)
+					_("Splitting {0} {1} into {2} rows as per Payment Terms").format(
+						_(entry.voucher_type), frappe.bold(entry.voucher_no), len(split_rows)
 					),
 					alert=True,
 				)