[FIX] purchase_stock: RFQ automatically created with an inactive vendor

Steps to reproduce the bug:
- Let's consider the storable product P and the vendor V
- Set V as a supplier of P
- Archive V
- Go to product P and click on button "Replenish"

Bug:

A RFQ was created with the vendor V

Now when archiving a vendor V, all the product.supplierinfo records linked to V
will be archived.

opw:2066616

X-original-commit: 5040c17

addons/product/models/product.py

@@ -805,6 +805,7 @@ class SupplierInfo(models.Model):
         'res.partner', 'Vendor',
         domain=[('supplier', '=', True)], ondelete='cascade', required=True,
         help="Vendor of this product")
+    active = fields.Boolean(related='name.active', readonly=True)
     product_name = fields.Char(
         'Vendor Product Name',
         help="This vendor's product name will be used when printing a request for quotation. Keep empty to use the internal one.")