Resolve 'EntitySystem.Get<T>()' is obsolete in content (#27936)

* PROJECT 0 WARNINGS: Resolve `'EntitySystem.Get<T>()' is obsolete` in content

* pass entman

* dog ass test

* webeditor

Content.Server/Ghost/Roles/GhostRoleSystem.cs

@@ -791,13 +791,15 @@ namespace Content.Server.Ghost.Roles
     [AnyCommand]
     public sealed class GhostRoles : IConsoleCommand
     {
+        [Dependency] private readonly IEntityManager _e = default!;
+
         public string Command => "ghostroles";
         public string Description => "Opens the ghost role request window.";
         public string Help => $"{Command}";
         public void Execute(IConsoleShell shell, string argStr, string[] args)
         {
             if (shell.Player != null)
-                EntitySystem.Get<GhostRoleSystem>().OpenEui(shell.Player);
+                _e.System<GhostRoleSystem>().OpenEui(shell.Player);
             else
                 shell.WriteLine("You can only open the ghost roles UI on a client.");
         }