fix(portal): User cannot create 0 qty SQ from RFQ

- The portal uses `create_supplier_quotation` for SQ creation which excludes 0 qty items

erpnext/buying/doctype/request_for_quotation/request_for_quotation.py

@@ -456,11 +456,10 @@ def create_supplier_quotation(doc):
 
 def add_items(sq_doc, supplier, items):
 	for data in items:
-		if data.get("qty") > 0:
-			if isinstance(data, dict):
-				data = frappe._dict(data)
+		if isinstance(data, dict):
+			data = frappe._dict(data)
 
-			create_rfq_items(sq_doc, supplier, data)
+		create_rfq_items(sq_doc, supplier, data)
 
 
 def create_rfq_items(sq_doc, supplier, data):

erpnext/buying/doctype/request_for_quotation/test_request_for_quotation.py

@@ -191,6 +191,23 @@ class TestRequestforQuotation(FrappeTestCase):
 		self.assertEqual(sq.items[0].qty, 0)
 		self.assertEqual(sq.items[0].item_code, rfq.items[0].item_code)
 
+	@change_settings(
+		"Buying Settings",
+		{
+			"allow_zero_qty_in_request_for_quotation": 1,
+			"allow_zero_qty_in_supplier_quotation": 1,
+		},
+	)
+	def test_supplier_quotation_from_zero_qty_rfq_in_portal(self):
+		rfq = make_request_for_quotation(qty=0)
+		rfq.supplier = rfq.suppliers[0].supplier
+		sq_name = create_supplier_quotation(rfq)
+
+		sq = frappe.get_doc("Supplier Quotation", sq_name)
+		self.assertEqual(len(sq.items), 1)
+		self.assertEqual(sq.items[0].qty, 0)
+		self.assertEqual(sq.items[0].item_code, rfq.items[0].item_code)
+
 
 def make_request_for_quotation(**args) -> "RequestforQuotation":
 	"""