Fix DH beacon detection logic mutating input block pos

alternate title: Fix DH beacon detection logic breaking the lighting engine

core/src/test/java/testItems/lightingEngine/LightingTestChunkWrapper.java

@@ -399,7 +399,7 @@ public class LightingTestChunkWrapper implements IChunkWrapper
 	}
 	
 	@Override
-	public ArrayList<DhBlockPos> getBlockLightPosList() { return this.blockLightPosList; }
+	public ArrayList<DhBlockPos> getWorldBlockLightPosList() { return this.blockLightPosList; }
 	
 	@Override
 	public boolean doNearbyChunksExist() { return false; }