Remove Explicit GridId References (#8315)

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Shared/Decals/DecalChunkUpdateEvent.cs

@@ -6,7 +6,7 @@ namespace Content.Shared.Decals
     [Serializable, NetSerializable]
     public sealed class DecalChunkUpdateEvent : EntityEventArgs
     {
-        public Dictionary<GridId, Dictionary<Vector2i, Dictionary<uint, Decal>>> Data = new();
-        public Dictionary<GridId, HashSet<Vector2i>> RemovedChunks = new();
+        public Dictionary<EntityUid, Dictionary<Vector2i, Dictionary<uint, Decal>>> Data = new();
+        public Dictionary<EntityUid, HashSet<Vector2i>> RemovedChunks = new();
     }
 }