Zombies keep their anomalies on zombification (#33867)

* Zombies keep their anomalies on zombification

* Refactor anombies to isolate anomalies and zombies

InnerBodyAnomalies now send an event when the host dies.
Zombies cancels this event if the host is turning into a zombie.

* Anomazombies: deprecate CancellableEntityEventArgs

CancellableEntityEventArgs is deprecated. Use structs
with bool Cancelled instead.

Content.Shared/Anomaly/Components/InnerBodyAnomalyComponent.cs

@@ -70,3 +70,11 @@ public sealed partial class InnerBodyAnomalyComponent : Component
     [DataField]
     public string LayerMap = "inner_anomaly_layer";
 }
+
+/// <summary>
+/// Event broadcast when an anomaly is being removed because the host is dying.
+/// Raised directed at the host entity with the anomaly.
+/// Cancel this if you want to prevent the host from losing their anomaly on death.
+/// </summary>
+[ByRefEvent]
+public record struct BeforeRemoveAnomalyOnDeathEvent(bool Cancelled = false);