message: build: fix formatting tasks by ignoring the `zone.js/` directory
  This was causing issues, because `zone.js` looks like a JS file (despite
  it being a directory). The contents of `zone.js/` are still matched by
  the globs (it is only the directory itself that is excluded).
  Related to
  PR Close
diff: @@ -11,6 +11,7 @@ const {I18N_FOLDER, I18N_DATA_FOLDER} = require('./cldr/extract');
  // clang-format entry points
  const srcsToFmt = [
  'packages/**/*.{js,ts}',
  + '!packages/zone.js', // Ignore the `zone.js/` directory itself. (The contents are still matched.)
  `!${I18N_DATA_FOLDER}/**/*.{js,ts}`,
  `!${I18N_FOLDER}/available_locales.ts`,
  `!${I18N_FOLDER}/currencies.ts`,
  