Issue Title:- System does not allow to cancel the packing slip if the packing slip posted from sales order which is link to Advance warehouse

Issue Area:- Account Receivable-> Sales order

Issue Detail:- Customer is not able to cancel the packing slip if the packing slip is posted from sales order which is link to the advance warehouse and also there is no option to cancel the packing slip from load.

Expectation->

If we post the packing slip from sales order which is link to the advance warehouse, there is no option to cancel the packing slip and cancel option greyed out at load form and sales order packing slip form.

There should be option to cancel the packing slip if we run through by above scenario.
2. What should be the approach to handle this scenario