Subfolders not synchronized

### ⚠️ 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

Android app currently useless due to without reliably functioning synchronization routine, including subfolders.

High criticality.

### Expected behaviour

One-way or two-way synchronization to be established comprising all subfolders.

### Actual behaviour

Synchronization is incomplete.

### Android version

16 / One UI 8.0

### Device brand and model

Samsung Tab S8

### Stock or custom OS?

Stock

### Nextcloud android app version

3.34.0 via Google Play

### Nextcloud server version

31.0.8

### Using a reverse proxy?

I don't know

### Android logs

_No response_

### Server error logs

```bash

```

### Additional information

_No response_