fix: prevent exchange rate flow from transaction to payment

(cherry picked from commit 934abe5c6d)

erpnext/accounts/doctype/payment_entry/payment_entry.py

@@ -3034,7 +3034,7 @@ def get_payment_entry(
 				pe, doc, discount_amount, base_total_discount_loss, party_account_currency
 			)
 
-		pe.set_exchange_rate(ref_doc=doc)
+		pe.set_exchange_rate()
 		pe.set_amounts()
 
 	# If PE is created from PR directly, then no need to find open PRs for the references