Properly close section storage managed files (#8364)

patches/server/Asynchronous-chunk-IO-and-loading.patch

@@ -3481,7 +3481,8 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
      @Override
      public void close() throws IOException {
 -        this.worker.close();
-+        //this.worker.close(); // Paper - nuke I/O worker
++        //this.worker.close(); // Paper - nuke I/O worker - don't call the worker
++        super.close(); // Paper - nuke I/O worker - call super.close method which is responsible for closing used files.
 +    }
 +
 +    // Paper start - get data function