[FIX] mrp: ensure only active BoMs are considered on product2bom

When executing the product2bom method it is possible that an active_test
context is present in self. However, the method should not consider
archived BoMs.

closes odoo/odoo#104495

X-original-commit: 5e07b367
Signed-off-by: William Henrotin (whe) <whe@odoo.com>