fix: Ignore validation validate_for_invalid_account_type for GST ca…

…tegory: SEZ (#2523)

* fix: ignore validate_for_invalid_account_type for SEZ

* fix: fix failing test case

* fix: correctly guess company gst category for all doctypes

---------

Co-authored-by: Smit Vora <smitvora203@gmail.com>
(cherry picked from commit 10cde4a)

india_compliance/gst_india/overrides/transaction.py

@@ -439,6 +439,20 @@ def validate_for_invalid_account_type(self):
         - Intra-State supplies should not have IGST account
         - If Intra-State, ensure both CGST and SGST accounts are used
         """
+        if self.is_sales_transaction:
+            company_address_field = "company_address"
+        elif self.doc.doctype == "Stock Entry":
+            company_address_field = "bill_from_address"
+        else:
+            company_address_field = "billing_address"
+
+        company_gst_category = frappe.db.get_value(
+            "Address", self.doc.get(company_address_field), "gst_category"
+        )
+
+        if company_gst_category == "SEZ":
+            return
+
         is_inter_state = is_inter_state_supply(self.doc)
 
         for row in self.gst_tax_rows: