Revert "fix: remove join for against in purchase receipt"

This reverts commit 758ec720deb78507f4972b8b71cb3731f6ee43c4.
diff --git a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
index a0cf7e7..e941c52 100644
--- a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
+++ b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
@@ -525,7 +525,7 @@
 							account_currency=account_currency,
 							item=item,
 						)
-
+   
 						self.add_gl_entry(
 							gl_entries=gl_entries,
 							account=self.get_company_default("exchange_gain_loss_account"),
@@ -800,7 +800,7 @@
 			# Backward compatibility:
 			# and charges added via Landed Cost Voucher,
 			# post valuation related charges on "Stock Received But Not Billed"
-			against_accounts = [d.account for d in gl_entries if flt(d.debit) > 0]
+			against_account = ", ".join([d.account for d in gl_entries if flt(d.debit) > 0])
 			total_valuation_amount = sum(valuation_tax.values())
 			amount_including_divisional_loss = negative_expense_to_be_booked
 			stock_rbnb = (