`Useful.truncate/3`: ** (MatchError) no match of right hand side value: nil

Just saw this error in the wild:

```sh
[error] GenServer #PID<0.578.0> terminating
** (MatchError) no match of right hand side value: nil
(useful 1.15.0) lib/useful.ex:316: Useful.truncate/3
(app 1.7.0) lib/app_web/live/app_live.html.heex:17: anonymous fn/2 in AppWeb.AppLive.render/1
(phoenix_live_view 1.0.0) lib/phoenix_live_view/diff.ex:391: Phoenix.LiveView.Diff.traverse/7
(phoenix_live_view 1.0.0) lib/phoenix_live_view/diff.ex:555: anonymous fn/4 in Phoenix.LiveView.Diff.traverse_dynamic/7
(elixir 1.17.2) lib/enum.ex:2531: Enum."-reduce/3-lists^foldl/2-0-"/3
(phoenix_live_view 1.0.0) lib/phoenix_live_view/diff.ex:389: Phoenix.LiveView.Diff.traverse/7
(phoenix_live_view 1.0.0) lib/phoenix_live_view/diff.ex:136: Phoenix.LiveView.Diff.render/3
(phoenix_live_view 1.0.0) lib/phoenix_live_view/channel.ex:960: anonymous fn/4 in Phoenix.LiveView.Channel.render_diff/3
(telemetry 1.3.0) /Users/n/code/who/deps/telemetry/src/telemetry.erl:324: :telemetry.span/3
(phoenix_live_view 1.0.0) lib/phoenix_live_view/channel.ex:955: Phoenix.LiveView.Channel.render_diff/3
(phoenix_live_view 1.0.0) lib/phoenix_live_view/channel.ex:811: Phoenix.LiveView.Channel.handle_changed/4
(stdlib 5.2.3) gen_server.erl:1095: :gen_server.try_handle_info/3
(stdlib 5.2.3) gen_server.erl:1183: :gen_server.handle_msg/6
(stdlib 5.2.3) proc_lib.erl:241: :proc_lib.init_p_do_apply/3
Last message: %Phoenix.Socket.Broadcast{topic: "live", event: "update", payload:
%{
data: %{id: 2952021, name: "Adriano P. S. Souza", location: "São Paulo/SP",
avatar_url: "https://avatars.githubusercontent.com/u/2952021",
bio: "✔️JAVA/GROOVY\r\n\r\n⏳JAVASCRIPT/NODE",
blog: "https://silvaesouza.github.io/", company: nil, created_at: "2012-12-03T13:21:30Z",
email: nil, followers: 11, following: 47, hireable: nil, login: "silvaesouza",
public_repos: 29,
two_factor_authentication: false, updated_at: ~N[2025-01-14 16:54:34],
inserted_at: ~N[2025-01-14 16:54:34]
}
```

Might need to dig into it to understand if the chars used in the `bio` are considered a non-binary ... 🤷‍♂️