fix(pos): multiple pos fixes and additions (#24227)

* fix: make custom fields in pos invoice similar to sales invoice

* feat: allow/disallow rate & discount change

* fix: any pos profile can be selected while creating pos opening

* fix: cannot add item to cart

* fix: validate phone payment only if payment request exists

* fix: replace pos payment method patch

* chore: rearrange item & customer group filter

* fix: allow/disallow invoice level discount

* fix: updating qty of item with uom having space char

* fix: move configuration checbox to config section

* fix: invalid item rate trigger

* fix: cannot remove item from draft invoices

* fix: customer currency not set in pos invoice

* fix: duplicate item error message

* fix: sales uom not fetched in pos invoice

* fix: cannot add taxes to pos invoice for uae region

* fix: cannot merge pos invoice into credit note

* fix: tax calculation while merging pos invoices

* feat: delete draft orders from order list

* fix: merging of pos invoice with pricing rules

erpnext/erpnext_integrations/doctype/mpesa_settings/test_mpesa_settings.py

@@ -44,6 +44,7 @@ class TestMpesaSettings(unittest.TestCase):
 		create_mpesa_settings(payment_gateway_name="Payment")
 		mpesa_account = frappe.db.get_value("Payment Gateway Account", {"payment_gateway": 'Mpesa-Payment'}, "payment_account")
 		frappe.db.set_value("Account", mpesa_account, "account_currency", "KES")
+		frappe.db.set_value("Customer", "_Test Customer", "default_currency", "KES")
 
 		pos_invoice = create_pos_invoice(do_not_submit=1)
 		pos_invoice.append("payments", {'mode_of_payment': 'Mpesa-Payment', 'account': mpesa_account, 'amount': 500})
@@ -69,6 +70,8 @@ class TestMpesaSettings(unittest.TestCase):
 		self.assertEquals(pos_invoice.mpesa_receipt_number, "LGR7OWQX0R")
 		self.assertEquals(integration_request.status, "Completed")
 
+		frappe.db.set_value("Customer", "_Test Customer", "default_currency", "")
+
 def create_mpesa_settings(payment_gateway_name="Express"):
 	if frappe.db.exists("Mpesa Settings", payment_gateway_name):
 		return frappe.get_doc("Mpesa Settings", payment_gateway_name)