Use opts.userDataDir if launchPersistentContext calls with empty args

[Ponchik501]

I'm trying to use UserPreferencesPlugin, like

chromium.use(
      UserPreferencesPlugin({
        userPrefs: {
          download: {
            prompt_for_download: false,
            open_pdf_in_system_reader: true
          },
          plugins: {
            always_open_pdf_externally: true
          },
        },
      })
    );
chromium.use(StealthPlugin());
context = await chromium.launchPersistentContext("",  opts);

and according logs user-data-dir never been picked up instead chrome has been running with playwright_chromiumdev_profileXXX temp dir

puppeteer-extra-plugin:user-data-dir Wrote file /var/folders/j8/fb74tww54y337579fd0rgqzr0000gn/T/puppeteer_dev_profile-K5tcyn/Default/Preferences +1ms
  pw:api => browserType.launchPersistentContext started +0ms
  pw:browser <launching> /Applications/Brave Browser.app/Contents/MacOS/Brave Browser --disable-field-trial-config ... --user-data-dir=/var/folders/j8/fb74tww54y337579fd0rgqzr0000gn/T/playwright_chromiumdev_profile-Br6TEW --remote-debugging-pipe about:blank +0ms
  pw:browser <launched> pid=73167 +71ms

after patch applied I'm getting this

puppeteer-extra-plugin:user-data-dir Wrote file /var/folders/j8/fb74tww54y337579fd0rgqzr0000gn/T/puppeteer_dev_profile-5bhXYb/Default/Preferences +1ms
...
  pw:api => browserType.launchPersistentContext started +0ms
  pw:browser <launching> /Applications/Brave Browser.app/Contents/MacOS/Brave Browser --disable-field-trial-config .... --user-data-dir=/var/folders/j8/fb74tww54y337579fd0rgqzr0000gn/T/puppeteer_dev_profile-5bhXYb --remote-debugging-pipe about:blank +0ms

which is right to me