"Local file not found" when uploading multiple files

### ⚠️ 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. Open an external application (like Aves)
2. Select multiple files to upload (for me it was 80+)
3. Share files with Nextcloud Android client
4. Start uploading
5. Don't touch your phone until upload is finished. Turn off the screen.

### Expected behaviour

All files uploaded without an error message.

### Actual behaviour

Nextcloud shows an error message for every ~10th file that "Local file not found". However, the file _is_ there locally and it's also uploaded to the server.

### Android version

12.0

### Device brand and model

Motorola

### Stock or custom OS?

Stock

### Nextcloud android app version

3.24.1

### Nextcloud server version

26.0.1

### Using a reverse proxy?

No

### Android logs

_No response_

### Server error logs

_No response_

### Additional information

_No response_