Health analyzer displays turns off when the battery dies (#16125)

Content.Server/Power/EntitySystems/BatterySystem.cs

@@ -11,6 +11,7 @@ namespace Content.Server.Power.EntitySystems
     [UsedImplicitly]
     public sealed class BatterySystem : EntitySystem
     {
+        [Dependency] private readonly SharedAppearanceSystem _sharedAppearanceSystem = default!;
         public override void Initialize()
         {
             base.Initialize();