message: refactor: Reworked how subset story paths are created.
diff: const path = require('path');
  const WebpackPluginFailBuildOnWarning = require('./webpack-plugin-fail-build-on-warning');
  +/**
  + * This set of stories are the ones that we publish to backstage.io.
  + */
  +const BACKSTAGE_CORE_STORIES = [
  + 'packages/core-components',
  + 'plugins/org',
  + 'plugins/search',
  +];
  +
  module.exports = ({ args }) => {
  // Calling storybook with no args causes our default list of stories to be used.
  // This set of stories are the ones that we publish to backstage.io
  //
  // If it's called with args, each arg should be the path to a package that we will
  // show the stories from, for example `yarn storybook plugins/catalog`.
  - let stories;
  - if (args.length === 0) {
  - stories = [
  - '../../core-components/src/**/*.stories.tsx',
  - '../../../plugins/org/src/**/*.stories.tsx',
  - '../../../plugins/search/src/**/*.stories.tsx',
  - ];
  - } else {
  - stories = args.map(arg => `../../../${arg}/src/**/*.stories.tsx`);
  - }
  +
  + const rootPath = '../../..';
  + const storiesSrcGlob = 'src/**/*.stories.tsx';
  +
  + const getStoriesPath = package =>
  + path.posix.join(rootPath, package, storiesSrcGlob);
  +
  + const packages = args.length === 0 ? BACKSTAGE_CORE_STORIES : args;
  + const stories = packages.map(getStoriesPath);
  return {
  stories,
  