[FIX] stock: fix KeyError for archived warehouses

The below line raises a KeyError when `warehouse` refers to an archived
warehouse.
https://github.com/odoo/odoo/blob/01cc43b0578ecc9d1fed37a12b2468ffc9d4aedd/addons/stock/models/stock_orderpoint.py#L396

The reason is that the SQL view created on
https://github.com/odoo/odoo/blob/01cc43b0578ecc9d1fed37a12b2468ffc9d4aedd/addons/stock/report/report_stock_quantity.py#L28-L37


doesn't take into account whether the warehouses are archived or not.

The solution proposed here is to fetch all warehouses to ensure the
lookup doesn't fail. Alternatively the view could be updated but that
will be a bigger change.

This issue was detected during the upgrade 226754

closes odoo/odoo#88204

Signed-off-by: William Henrotin (whe) <whe@odoo.com>