Allow air to be valued

Author: tastybento

src/main/java/world/bentobox/level/calculators/IslandLevelCalculator.java

@@ -487,9 +487,6 @@ private void scanAsync(ChunkPair cp) {
     private void processBlock(ChunkPair cp, int x, int y, int z, int globalX, int globalZ) {
         BlockData blockData = cp.chunkSnapshot.getBlockData(x, y, z);
         Material m = blockData.getMaterial();
-        if (m.isAir()) {
-            return;
-        }
 
         boolean belowSeaLevel = seaHeight > 0 && y <= seaHeight;
         Location loc = new Location(cp.world, globalX, y, globalZ);

src/main/java/world/bentobox/level/config/BlockConfig.java

@@ -19,7 +19,6 @@
 import org.bukkit.configuration.file.YamlConfiguration;
 import org.bukkit.entity.EntityType;
 
-import world.bentobox.bentobox.BentoBox;
 import world.bentobox.bentobox.hooks.ItemsAdderHook;
 import world.bentobox.level.Level;
 
@@ -198,7 +197,7 @@ public Map<World, Map<EntityType, Integer>> getWorldSpawnerValues() {
     }
 
     /**
-     * Retrieves the value associated with a spawner in the specified world,
+     * Retrieves the value associated with a block in the specified world,
      * using world-specific settings if available, or falling back to baseline values.
      *
      * @param world the world context
@@ -229,7 +228,6 @@ public Integer getValue(World world, Object obj) {
                 return value;
             }
         }
-
         // Fall back to the baseline value
         return getBlockValues().get(key);
     }