[FIX] product_assortment: partner action

Partner action to show assortments shows only the ones linked by
partner_ids, but not via `partner_domain`. Using already existing
`applied_assortment_ids` takes all into account.

Author: danielduqma

product_assortment/models/res_partner.py

@@ -20,8 +20,7 @@ def action_define_product_assortment(self):
         xmlid = "product_assortment.actions_product_assortment_view"
         action = self.env["ir.actions.act_window"]._for_xml_id(xmlid)
         action["domain"] = [
-            ("partner_ids", "in", self.ids),
-            ("is_assortment", "=", True),
+            ("id", "in", self.applied_assortment_ids.ids),
         ]
         ctx = self.env.context.copy()
         ctx.update(