[#2301] Proper handling of User.is_discoverable: users appear in in-service search but are hidden from external services like search bots.

test/pleroma/web/metadata/providers/restrict_indexing_test.exs

@@ -18,7 +18,7 @@ defmodule Pleroma.Web.Metadata.Providers.RestrictIndexingTest do
              }) == []
     end
 
-    test "for local user when discoverable is false" do
+    test "for local user when `is_discoverable` is false" do
       assert Pleroma.Web.Metadata.Providers.RestrictIndexing.build_tags(%{
                user: %Pleroma.User{local: true, is_discoverable: false}
              }) == [{:meta, [name: "robots", content: "noindex, noarchive"], []}]