Fix ChunkGenerator#generateCaves never being called

By: DerFrZocker <derrieple@gmail.com>

paper-server/src/main/java/org/bukkit/craftbukkit/generator/CustomChunkGenerator.java

@@ -236,14 +236,14 @@ public class CustomChunkGenerator extends InternalChunkGenerator {
             delegate.applyCarvers(regionlimitedworldaccess, seed, randomstate, biomemanager, structuremanager, ichunkaccess, worldgenstage_features);
         }
 
-        if (worldgenstage_features == WorldGenStage.Features.LIQUID) { // stage check ensures that the method is only called once
+        // Minecraft removed the LIQUID_CARVERS stage from world generation, without removing the LIQUID Carving enum.
+        // Meaning this method is only called once for each chunk, so no check is required.
         CraftChunkData chunkData = new CraftChunkData(this.world.getWorld(), ichunkaccess);
         random.setDecorationSeed(seed, 0, 0);
 
         generator.generateCaves(this.world.getWorld(), new RandomSourceWrapper.RandomWrapper(random), x, z, chunkData);
         chunkData.breakLink();
     }
-    }
 
     @Override
     public CompletableFuture<IChunkAccess> fillFromNoise(Executor executor, Blender blender, RandomState randomstate, StructureManager structuremanager, IChunkAccess ichunkaccess) {