fix: do not copy blanket order naming series to the mapped order

get_mapped_doc copies every same-named field that is not no_copy, so the
Sales Order / Purchase Order / Quotation created from a Blanket Order
inherited MFG-BLR-.YYYY.- and was named MFG-BLR-2026-00003 instead of
SAL-ORD-2026-00001.

exclude naming_series from the mapping, same as job card does when it
maps to a Purchase Order.

erpnext/manufacturing/doctype/blanket_order/blanket_order.py

@@ -149,7 +149,11 @@ def make_order(source_name: str):
 		"Blanket Order",
 		source_name,
 		{
-			"Blanket Order": {"doctype": doctype, "postprocess": update_doc},
+			"Blanket Order": {
+				"doctype": doctype,
+				"field_no_map": ["naming_series"],
+				"postprocess": update_doc,
+			},
 			"Blanket Order Item": {
 				"doctype": doctype + " Item",
 				"field_map": {"rate": "blanket_order_rate", "parent": "blanket_order"},