fix #1188 fix structure eligibility with strongholds

src/main/java/carpet/fakes/ChunkGeneratorInterface.java

@@ -1,6 +1,9 @@
 package carpet.fakes;
 
+import net.minecraft.world.biome.Biome;
+
 public interface ChunkGeneratorInterface
 {
     void initStrongholds();
+    boolean canPlaceStrongholdInBiomeCM(Biome biome);
 }