ci: Fix failing native tests (#3404)

chore(aft): Fix failing native tests

Fixes issue on Windows with checking the `.dart_tool` directory by always running `pub get`.

packages/aft/lib/src/commands/publish_command.dart

@@ -269,10 +269,13 @@ Future<void> runBuildRunner(
  if (!package.needsBuildRunner && !force) {
  return;
  }
- final dartTool = Directory(p.join(package.path, '.dart_tool'));
- if (!dartTool.existsSync()) {
- await runPub(package.flavor, ['get'], package);
- }
+ // Run `pub get` to ensure `build_runner` is available.
+ await runPub(
+ package.flavor,
+ ['get'],
+ package,
+ verbose: verbose,
+ );
  logger.debug('Running build_runner for ${package.name}...');
  final buildRunnerCmd = await Process.start(
  package.flavor.entrypoint,
@@ -283,6 +286,7 @@ Future<void> runBuildRunner(
  'build',
  '--delete-conflicting-outputs',
  ],
+ runInShell: true,
  workingDirectory: package.path,
  );
  final output = StringBuffer();