The issue was introduced by:
https://github.com/odoo/odoo/commit/90158f647ba610b31499555641c9db8450b49c4c

The issue has been fixed by:
https://github.com/odoo/odoo/commit/b1666c61bbc9d7e7b920483e168c6048ecde011c

This commit is adding a test for it.

**Steps to reproduce:**
- Install Accounting and purchase_stock
- Activate a foreign currency (e.g. Euro)
- Create a PO:
  * Vendor: [any]
  * Currency: EUR
  * Product: [any with a Unit Price and a tax]
  * Payment Terms: [any] (e.g. 15 Days)
- Confirm the PO
- Validate the receipt order
- Go to "Accounting / Vendors / Bills"
- Create a new bill
- In "Auto-Complete" field, select the created PO

**Issue:**
A traceback is raised due to a division by zero.

**Cause:**
The bill and its lines are created from some information coming
from the PO.
In the computation of the needed terms of the bill, a computation
of the taxes is called on the lines (i.e. _compute_all_tax).
During that computation, the rate is computed as followed:

(*) rate = line.amount_currency / line.balance if line.balance else line.currency_rate

and later, rate is used as followed:

'balance': tax['amount'] / rate

When "purchase_stock" module is not installed, there is no issue
because "_prepare_account_move_line" method from "purchase.order.
line" model doesn't initialized "amount_currency" nor "balance".
Therefore, the result of (*) falls back on "line.currency_rate"
which is not zero.

However, when "purchase_stock" module is installed, "balance" is
initialized in "_prepare_account_move_line" but not "amount_currency",
leading a result of 0 for (*).

opw-4681735