Fix folder mapping

[ashiagr]

Description

This PR fixes folder mapping during folders full sync at the time of clean install and login.

See internal discussion: p1659697659512559/1659608112.261529-slack-C028JAG44VD for more details.

How to test?

0. Create a fresh account and gift plus plan to it.
1. Create a folder on device using this account and add a podcast to it (make sure not to assign color / podcasts sort type / sort order to the folder).
2. Sync folder to server and make sure it is shown in web interface.
3. Logout from device + clear storage.
4. Login to account on device.
5. ✅ Go to Podcasts tab, notice that folder is shown with podcast inside it.

Checklist

• Should this change be included in the release notes? If yes, please add a line in RELEASE-NOTES.md
• Have you tested in landscape?
• Have you tested accessibility with TalkBack?
• Have you tested in different themes?
• Does the change work with a large display font?
• Are all the strings localized?
• Could you have written any new tests?
• Did you include Compose previews with any components?