Freeze eventbus dictionaries (#22628)

* Freeze event bus

* Cleanup

Content.Benchmarks/EntityManagerGetAllComponents.cs

@@ -48,6 +48,7 @@ namespace Content.Benchmarks
             var componentFactory = new Mock<IComponentFactory>();
             componentFactory.Setup(p => p.GetComponent<DummyComponent>()).Returns(new DummyComponent());
             componentFactory.Setup(p => p.GetRegistration(It.IsAny<DummyComponent>())).Returns(dummyReg);
+            componentFactory.Setup(p => p.GetAllRegistrations()).Returns(new[] { dummyReg });
             componentFactory.Setup(p => p.GetAllRefTypes()).Returns(new[] { CompIdx.Index<DummyComponent>() });
 
             IoCManager.RegisterInstance<IComponentFactory>(componentFactory.Object);

Content.Server/Afk/AfkManager.cs

@@ -4,7 +4,6 @@ using Robust.Server.Player;
 using Robust.Shared.Configuration;
 using Robust.Shared.Console;
 using Robust.Shared.Enums;
-using Robust.Shared.Input;
 using Robust.Shared.Player;
 using Robust.Shared.Timing;
 
@@ -35,7 +34,6 @@ namespace Content.Server.Afk
     [UsedImplicitly]
     public sealed class AfkManager : IAfkManager
     {
-        [Dependency] private readonly IEntityManager _entityManager = default!;
         [Dependency] private readonly IPlayerManager _playerManager = default!;
         [Dependency] private readonly IGameTiming _gameTiming = default!;
         [Dependency] private readonly IConfigurationManager _cfg = default!;

Content.Server/Entry/EntryPoint.cs

@@ -64,10 +64,7 @@ namespace Content.Server.Entry
             factory.DoAutoRegistrations();
             factory.IgnoreMissingComponents("Visuals");
 
-            foreach (var ignoreName in IgnoredComponents.List)
-            {
-                factory.RegisterIgnore(ignoreName);
-            }
+            factory.RegisterIgnore(IgnoredComponents.List);
 
             prototypes.RegisterIgnore("parallax");
             prototypes.RegisterIgnore("guideEntry");

Content.Server/Holiday/HolidaySystem.cs

@@ -23,8 +23,7 @@ namespace Content.Server.Holiday
 
         public override void Initialize()
         {
-            _configManager.OnValueChanged(CCVars.HolidaysEnabled, OnHolidaysEnableChange, true);
-
+            _configManager.OnValueChanged(CCVars.HolidaysEnabled, OnHolidaysEnableChange);
             SubscribeLocalEvent<GameRunLevelChangedEvent>(OnRunLevelChanged);
             SubscribeLocalEvent<HolidayVisualsComponent, ComponentInit>(OnVisualsInit);
         }