Fix: handling /get/?args

[leandroalonso]

In the latest newsletter we add a new type of /get link, eg.: https://pocketcasts.com/get/?utm_source=email.

The app doesn't handle /get/ though, which makes it to open the browser.

To test

1. Run the app on a real device
2. Add https://pocketcasts.com/get/?utm_source=email to the Notes app for example
3. Tap on it
4. ✅ The app should open and it should not open Safari
5. Test https://pocketcasts.com/get
6. ✅ It should open the app

Checklist

• I have considered if this change warrants user-facing release notes and have added them to CHANGELOG.md if necessary.
• I have considered adding unit tests for my changes.
• I have updated (or requested that someone edit) the spreadsheet to reflect any new or changed analytics.

[danielebogo]