pass user to User.blocks?/2 instead of ap_id

test/web/activity_pub/transmogrifier_test.exs

@@ -357,7 +357,7 @@ test "it works for incoming blocks" do
 
       blocker = User.get_by_ap_id(data["actor"])
 
-      assert User.blocks?(blocker, user.ap_id)
+      assert User.blocks?(blocker, user)
     end
 
     test "it works for incoming unblocks" do