Two way sync ignores subfolders

### ⚠️ Before posting ⚠️

- [x] This is a **bug**, not a question or an enhancement.
- [x] I've [searched for similar issues](https://github.com/nextcloud/android/issues) and didn't find a duplicate.
- [x] I've written a clear and descriptive title for this issue, not just "Bug" or "Crash".
- [x] I agree to follow Nextcloud's [Code of Conduct](https://nextcloud.com/contribute/code-of-conduct/).

### Steps to reproduce

1. In the App, navigate to some Nextcloud folder that has sub-folders
2. Open folder details and activate "Sync"
3. Open details for some sub-folder and verify, that Sync has been activated here automatically
4. Go to app settings and verify that two way sync is enabled
5. Wait for Nextcloud to sync
6. Check if sub-folder was synced

### Expected behaviour

Should sync everything in the folder, also sub-folders.

### Actual behaviour

Subfolders are ignored. And sync can not be activated separately for these folders because it is already activated / grayed out.

### Android version

16

### Device brand and model

Pixel 7

### Stock or custom OS?

Custom (explain in "additional information")

### Nextcloud android app version

3.35.1

### Nextcloud server version

dont know

### Using a reverse proxy?

I don't know

### Android logs

_No response_

### Server error logs

```bash

```

### Additional information

_No response_