Fix Credo Readability (strict)

- Max line length, implicit try, alias order, zero-arity defs
- String sigils, long comments split; redundant blank lines fixed

test/mv/helpers/system_actor_test.exs

@@ -4,9 +4,9 @@ defmodule Mv.Helpers.SystemActorTest do
   """
   use Mv.DataCase, async: false
 
-  alias Mv.Helpers.SystemActor
-  alias Mv.Authorization
   alias Mv.Accounts
+  alias Mv.Authorization
+  alias Mv.Helpers.SystemActor
 
   require Ash.Query