Fix Fabric carver cache flushing

platforms/fabric/src/main/java/com/dfsek/terra/fabric/world/handles/world/FabricWorldChunkRegion.java

@@ -69,6 +69,17 @@ public class FabricWorldChunkRegion implements World {
         return new FabricBlock(pos, delegate.chunk);
     }
 
+    @Override
+    public int hashCode() {
+        return delegate.generator.hashCode();
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if(!(obj instanceof FabricWorldChunkRegion)) return false;
+        return ((FabricWorldChunkRegion) obj).delegate.generator.equals(delegate.generator);
+    }
+
     @Override
     public Block getBlockAt(Location l) {
         return getBlockAt(l.getBlockX(), l.getBlockY(), l.getBlockZ());