message: [vcpkg] Ignore dependencies not found errors when downloading mode
diff: @@ -954,7 +954,7 @@ namespace vcpkg::Build
  }
  }
  - if (!missing_fspecs.empty())
  + if (!missing_fspecs.empty() && !Util::Enum::to_bool(action.build_options.only_downloads))
  {
  return {BuildResult::CASCADED_DUE_TO_MISSING_DEPENDENCIES, std::move(missing_fspecs)};
  }
  