Revert biome rework (#38724)

* Revert "Fix world generation (#38713)"

This reverts commit 10fa6ff4af.

* Revert "Biome rework (#37735)"

This reverts commit fe7b96147c.

Content.Shared/Procedural/PostGeneration/AutoCablingDunGen.cs

@@ -0,0 +1,12 @@
+using Robust.Shared.Prototypes;
+
+namespace Content.Shared.Procedural.PostGeneration;
+
+/// <summary>
+/// Runs cables throughout the dungeon.
+/// </summary>
+public sealed partial class AutoCablingDunGen : IDunGenLayer
+{
+    [DataField(required: true)]
+    public EntProtoId Entity;
+}