fix: flutter 3.29.x Parsing error(s): [(321..325): Doc directive 'nodoc' is unknown.

[IamMuuo]

Skip sky_engine During Package Parsing in CLI Compile

Summary

This PR updates the Dart Eval CLI compiler to skip the sky_engine package during the package parsing phase. sky_engine is an SDK-internal package that does not need to be parsed or compiled, and including it leads to unnecessary processing or potential path resolution errors.

Changes Made

• Added a condition to ignore sky_engine when iterating over packages in package_config.json.
• Enhanced the skip message log for clarity.

Code Highlight

for (final package in packageConfig.packages) {
  if (package.name == 'sky_engine') {
    skips += 'Skipped SDK package sky_engine.\n';
    continue;
  }

  if (bridgedPackages.contains(package.name)) {
    skips += 'Skipped package ${package.name} because it is bridged.\n';
    continue;
  }

  if (packageName == package.name) {
    continue;
  }

  stdout.write('${package.name} ');

  String filepath;
  try {
    filepath = package.packageUriRoot.toFilePath();
  } catch (e) {
    filepath = package.packageUriRoot.toString();
  }

  final pkgDir = Directory(filepath);
  addFiles(package.name, pkgDir, pkgDir.path);
}

Why I skipped sky engine ?

The sky_engine package is part of the Dart SDK internals and is marked with a @nodoc annotation, which causes dart_eval to throw the nodoc exception which is quite confusing to a user.

To checkout the nodoc annotated file check it out on any 3.29 distribution on package:sky_engine/concurrent/concurrent.dart

Did I test my patch ?

Yes tested on both Linux Desktop and Android emulator and everything works as expected on 3.29.3