fix: Check for supplier name

(cherry picked from commit 944e3d467c5ab0a2a4a76a8b532e53bca77f8e61)
diff --git a/erpnext/accounts/report/tds_payable_monthly/tds_payable_monthly.py b/erpnext/accounts/report/tds_payable_monthly/tds_payable_monthly.py
index 5c47514..6a7f2e5 100644
--- a/erpnext/accounts/report/tds_payable_monthly/tds_payable_monthly.py
+++ b/erpnext/accounts/report/tds_payable_monthly/tds_payable_monthly.py
@@ -49,7 +49,7 @@
 			}
 
 			if filters.naming_series == 'Naming Series':
-				row.update({'supplier_name': supplier_map.get(supplier).supplier_name})
+				row.update({'supplier_name': supplier_map.get(supplier, {}).get('supplier_name')})
 
 			row.update({
 				'section_code': tax_withholding_category,