Widget not updating with flutter_fancy_tree and useOnStreamChange

[DraftedDev]

Hi, thanks for this awesome library.
I currently work on an IDE and try to build the file view/explorer.

As of right now, the tree view lists files and directories (recursive), but it doesn't seem to change with any file system events.
I have this code:

import 'dart:io';

import 'package:flutter/material.dart';
import 'package:flutter_fancy_tree_view/flutter_fancy_tree_view.dart';
import 'package:flutter_hooks/flutter_hooks.dart';
import 'package:path/path.dart' as path;

class DirectoryExplorer extends HookWidget {
  final Directory rootDirectory;

  const DirectoryExplorer({super.key, required this.rootDirectory});

  @override
  Widget build(final BuildContext context) {
    final ValueNotifier<bool> rebuilder = useValueNotifier(true);

    final ValueNotifier<_FileExplorerEntity> root =
        useState(_FileExplorerEntity(rootDirectory));

    final ValueNotifier<TreeController<_FileExplorerEntity>> controller =
        useState(TreeController<_FileExplorerEntity>(
            roots: <_FileExplorerEntity>[root.value],
            childrenProvider: (final _FileExplorerEntity node) {
              final List<_FileExplorerEntity> children = node.children;

              children.sort(
                  (final _FileExplorerEntity a, final _FileExplorerEntity b) {
                if (a.isDirectory) {
                  return -1;
                } else if (b.isDirectory) {
                  return 1;
                } else {
                  return 0;
                }
              });

              return children;
            }));

    useOnStreamChange(root.value.entity.watch(recursive: true),
        onData: (final FileSystemEvent event) {
      root.value.buildChildren();

      rebuilder.value = !rebuilder.value;
    });

    return TreeView<_FileExplorerEntity>(
      treeController: controller.value,
      nodeBuilder: (final BuildContext context,
          final TreeEntry<_FileExplorerEntity> entry) {
        final FileSystemEntity entity = entry.node.entity;

        final bool isDirectory = entity is Directory;
        final String basePath = path.basename(entity.path);

        return TreeIndentation(
            entry: entry,
            child: TextButton.icon(
              label: Text(basePath),
              onPressed: () {
                if (isDirectory) {
                  controller.value.toggleExpansion(entry.node);
                }
              },
              icon: Icon(isDirectory ? Icons.folder : Icons.insert_drive_file),
              style: const ButtonStyle(
                  alignment: Alignment.centerLeft,
                  shape: WidgetStatePropertyAll<ContinuousRectangleBorder>(
                      ContinuousRectangleBorder())),
            ));
      },
    );
  }
}

class _FileExplorerEntity {
  final FileSystemEntity entity;

  List<_FileExplorerEntity> children = <_FileExplorerEntity>[];

  _FileExplorerEntity(this.entity) {
    buildChildren();
  }

  bool get isDirectory => entity is Directory;

  void buildChildren() {
    if (isDirectory) {
      children.clear();

      final Directory directory = entity as Directory;

      directory.list(followLinks: false).listen((final FileSystemEntity child) {
        children.add(_FileExplorerEntity(child));
      });
    }
  }
}

The filesystem event listener (OnStreamChange) is working, but it doesn't instantly update the UI. To update the UI, I need to click a directory "tile"/"button" to rebuild the widget, but I would like it to update it as soon as a filesystem event happens.

Thanks for any help!