Currently, when a subscription payment is processed through a provider
configured to use as outstanding account the bank default account,
the resulting invoice may remain in an 'open' state even though
the payment transaction is 'done'.
This type of configuration is usually done when users want to skip
the bank reconciliation process, and just create payments without
the need to reconcile the payments with transactions.

Steps to reproduce:
- In Settings, under Sales > Invoicing, disable Automatic Invoice
- Activate demo payment method
- In the main Bank account add the default account as outstanding
  account for demo payment method.
- Create a sales order with a subscription product
- Open Preview
- Pay
- Go back to the sales order and open the created invoice

Issue:
The invoice is created and the payment is registered, but
the invoice remains 'Not Paid'.

Analysis:
The invoice and the payment move lines are not automatically reconciled
during the post-processing of the transaction, leaving the invoice
unbalanced.

opw-5869303

### **Description of the issue/feature this PR addresses:**

**Issue:** In Odoo 18/19, purchase move lines default to the WH's main stock location (`lot_stock_id`) as the `location_final_id`. However, when a user configures a sub-location on the Receipt Operation Type, the picking destination is correct, but the move lines are defaulted to the main warehouse. This mismatch causes the Forecasted Quantity to not increment for the intended sub-location

**Solution:** Prioritize the `default_location_dest_id` before falling back to the default stock location

opw-6032018

### **Current behavior before PR:** 
When confirming a PO, the `location_final_id` on stock moves defaults to the `lot_stock_id`, regardless of the specific destination set on the Operation Type. This causes a mismatch in 1-step receiving flows where a sub-location (e.g., WH/Stock/Test) is intended, since the move lines revert to the root warehouse location (WH/Stock). Thus, the forecasted quantity for the specific sub-location doesn't increment as expected.

### **Desired behavior after PR is merged:** 
The `_get_final_location_record` method will now evaluate if the Operation Type's `default_location_dest_id` is a child of the warehouse's main stock. If it is, the sub-location is used as the `location_final_id` for the moves and move lines. This ensures that the forecasted quantity reflects the intended destination upon PO confirmation while still maintaining the fallback to the warehouse root for standard multi-step routes.




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Forward-Port-Of: odoo/odoo#256725
Forward-Port-Of: odoo/odoo#254527

Steps to reproduce:
Bug 1 (The Crash):
1. Open Documents app, select a PDF, and click Action > Sign.
2. In the Sign app, delete the newly created Sign Template.
3. Return to the Documents app.
4. A traceback occurs (`KeyError: <document_id>`) in `web_read`.

Bug 2 (The Broken Lineage):
1. Create two separate Sign Templates from the exact same Document.
2. Send a signature request from the second template.
3. The `reference_doc` on the signature request fails to link back to the original Document.

Current behavior:
When creating a sign template from a document, `documents_sign` intentionally unlinks the original `ir.attachment` (`res_model = False`) to pass custody to `sign.document`. If the template is deleted, the attachment is orphaned, permanently corrupting the original `documents.document` and crashing the UI. 
Furthermore, the lineage tracking (`reference_doc`) relies strictly on a 1:1 shared `attachment_id`. If a user creates multiple templates from one document, the system is forced to make a copy for the second template, natively breaking the lineage tracking because the IDs no longer match.

Expected behavior:
Documents should not be corrupted when generating or deleting sign templates. Furthermore, lineage tracking (`reference_doc`) should successfully link back to the original document regardless of how many templates have been generated from it.

Fix:
1. Replaced the `res_model = False` custody-handoff hack in `documents_sign` with a safe `.copy({'original_id': attachment.id})`. This sandboxes the Sign app's files, completely preventing the deletion crash and the multi-template conflicts.
2. Updated the `reference_doc` computation in `sign.request` to dynamically search for both the current `attachment_id` AND its `original_id` (utilizing a minimal-diff recordset union `|`). This perfectly preserves the lineage tracking for all templates without requiring database schema changes.

Task: 5432116