Favorits in nextcloud android app disappear after a second and not all are shown.

### ⚠️ 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. Add some folders and files to favorites
2. open android app
3. change to favorites
4. wait
5. reload and wait again

### Expected behaviour

Just show all folders and files marked as favorites

### Actual behaviour

not all files and folders are shown.
After start or reload of favorites i see more files. Some of them disappear after a short time.

https://github.com/user-attachments/assets/bb220248-95ea-49dd-b0e5-28d811202d49

And this are all favorites, shown on nextcloud web

### Android version

17

### Device brand and model

Google Pixel 7

### Stock or custom OS?

Custom (explain in "additional information")

### Nextcloud android app version

34.0.1

### Nextcloud server version

33.0.5

### Using a reverse proxy?

Yes

### Android logs

_No response_

### Server error logs

```bash

```

### Additional information

I have no working USB-Cable, so i can't give app-logs.
And there are no errors or other messages in the serverlog (nextcloud-aio)

Start by reproducing the issue in the Android app's Favorites view using the listed steps, versions, and Pixel 7 details, then compare the results with the favorites shown on the Nextcloud web interface. The work is done when all favorited files and folders remain visible after opening, waiting, and reloading the view; app logs may be needed because none are included.

Written by the indexing model from the issue text.