Revert biome rework (#38724)

* Revert "Fix world generation (#38713)"

This reverts commit 10fa6ff4af.

* Revert "Biome rework (#37735)"

This reverts commit fe7b96147c.

Content.Server/Procedural/DungeonJob/DungeonJob.CorridorClutter.cs

@@ -48,13 +48,7 @@ public sealed partial class DungeonJob
 
             var protos = _entTable.GetSpawns(contents, random);
             var coords = _maps.ToCenterCoordinates(_gridUid, tile, _grid);
-            var uids = _entManager.SpawnEntitiesAttachedTo(coords, protos);
-
-            foreach (var uid in uids)
-            {
-                AddLoadedEntity(tile, uid);
-            }
-
+            _entManager.SpawnEntitiesAttachedTo(coords, protos);
             await SuspendIfOutOfTime();
 
             if (!ValidateResume())