Content changes for entity categories PR (#27232)

* Content changes for entity categories PR

* Poke tests

* Why are tests suddenly working?

Content.Server/Spawners/Components/TimedSpawnerComponent.cs

@@ -9,7 +9,7 @@ namespace Content.Server.Spawners.Components;
 /// Can configure the set of entities, spawn timing, spawn chance,
 /// and min/max number of entities to spawn.
 /// </summary>
-[RegisterComponent]
+[RegisterComponent, EntityCategory("Spawner")]
 public sealed partial class TimedSpawnerComponent : Component, ISerializationHooks
 {
     /// <summary>