fix: check_credit_limit on_update_after_submit of Sales Order

[Nihantra-Patel]

fixes: #32671

Version 15 and 14

Before:

• When updating the Sales Order using 'Update Items' after submitted then credit_limit validation does not work.

https://github.com/frappe/erpnext/assets/141945075/995e9968-e2da-4cbf-af3b-e5713e6dad8a

After:

• After the method on_update_after_submit, then it works properly.

https://github.com/frappe/erpnext/assets/141945075/c35d2a82-81e9-4378-85bf-119efa78840a

Thank You!