Revert biome rework (#38724)

* Revert "Fix world generation (#38713)"

This reverts commit 10fa6ff4af.

* Revert "Biome rework (#37735)"

This reverts commit fe7b96147c.

Content.Client/Parallax/Commands/ShowBiomeCommand.cs

@@ -0,0 +1,22 @@
+using Robust.Client.Graphics;
+using Robust.Shared.Console;
+
+namespace Content.Client.Parallax.Commands;
+
+public sealed class ShowBiomeCommand : LocalizedCommands
+{
+    [Dependency] private readonly IOverlayManager _overlayMgr = default!;
+
+    public override string Command => "showbiome";
+    public override void Execute(IConsoleShell shell, string argStr, string[] args)
+    {
+        if (_overlayMgr.HasOverlay<BiomeDebugOverlay>())
+        {
+            _overlayMgr.RemoveOverlay<BiomeDebugOverlay>();
+        }
+        else
+        {
+            _overlayMgr.AddOverlay(new BiomeDebugOverlay());
+        }
+    }
+}