fixup! fix: tax_item_rate calculation

Author: blaggacao

erpnext/public/js/controllers/transaction.js

@@ -2108,7 +2108,7 @@ erpnext.TransactionController = class TransactionController extends erpnext.taxe
 			return this.frm.call({
 				method: "erpnext.stock.get_item_details.get_item_tax_map",
 				args: {
-					company: me.frm.doc.company,
+					doc: me.frm.doc,
 					item_tax_template: item.item_tax_template,
 					as_json: true
 				},

erpnext/stock/get_item_details.py

@@ -687,9 +687,10 @@ def is_within_valid_range(ctx: ItemDetailsCtx, tax) -> bool:
 
 
 @frappe.whitelist()
-def get_item_tax_map(*, doc: dict | Document, tax_template: str | None = None, as_json=True):
+def get_item_tax_map(*, doc: str | dict | Document, tax_template: str | None = None, as_json=True):
+	doc = parse_json(doc)
 	item_tax_map = {}
-	for t in (t for t in doc.get("taxes", []) if not t.set_by_item_tax_template):
+	for t in (t for t in doc.get("taxes", default=[]) if not t.set_by_item_tax_template):
 		item_tax_map[t.account_head] = t.rate
 
 	if tax_template: