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()' is obsolete in content (#27936)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()' is obsolete` in content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/GameTicking/Commands/ToggleReadyCommand.cs

@@ -6,6 +6,8 @@ namespace Content.Server.GameTicking.Commands
     [AnyCommand]
     sealed class ToggleReadyCommand : IConsoleCommand
     {
+        [Dependency] private readonly IEntityManager _e = default!;
+
         public string Command => "toggleready";
         public string Description => "";
         public string Help => "";
@@ -23,7 +25,7 @@ namespace Content.Server.GameTicking.Commands
                 return;
             }
 
-            var ticker = EntitySystem.Get<GameTicker>();
+            var ticker = _e.System<GameTicker>();
             ticker.ToggleReady(player, bool.Parse(args[0]));
         }
     }