Biome marker layer tweaks (#23663)

* Biome marker layer tweaks

- Ensure veins get spawned at great perf cost (it's time-sliced anyway).
- Bump asteroids from 6 nodes to 10 nodes.

* Fixes

* magnet

* Magnet dictates wreck spawn

* Update Content.Shared/Procedural/PostGeneration/BiomeMarkerLayerPostGen.cs

* mraow

Content.Client/Salvage/UI/SalvageExpeditionConsoleBoundUserInterface.cs

@@ -31,6 +31,7 @@ public sealed class SalvageExpeditionConsoleBoundUserInterface : BoundUserInterf
     {
         base.Open();
         _window = new OfferingWindow();
+        _window.Title = Loc.GetString("salvage-expedition-window-title");
         _window.OnClose += Close;
         _window?.OpenCenteredLeft();
     }