fix: for Tree Type item and item group show net amount (#31776)

fix: for Tree Type item and item group show net amout

(cherry picked from commit 9176209)

Co-authored-by: hrzzz <paulo_fabris@hotmail.com>

erpnext/selling/report/sales_analytics/sales_analytics.py

@@ -168,7 +168,7 @@ def get_sales_transactions_based_on_customers_or_suppliers(self):
 	def get_sales_transactions_based_on_items(self):
 
 		if self.filters["value_quantity"] == "Value":
-			value_field = "base_amount"
+			value_field = "base_net_amount"
 		else:
 			value_field = "stock_qty"
 
@@ -216,7 +216,7 @@ def get_sales_transactions_based_on_customer_or_territory_group(self):
 
 	def get_sales_transactions_based_on_item_group(self):
 		if self.filters["value_quantity"] == "Value":
-			value_field = "base_amount"
+			value_field = "base_net_amount"
 		else:
 			value_field = "qty"