Auto upload stopped working

### ⚠️ 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. Update Nextcloud app to version 3.35.0 (from F-Droid)
2. Take photos
3. Wait for several hours
4. Nothing gets uploaded

### Expected behaviour

Photos should be uploaded to my Nextcloud server automatically.

### Actual behaviour

Photos don't get uploaded.

### Android version

15

### Device brand and model

Xiaomi Redmi Note 8T

### Stock or custom OS?

Custom (explain in "additional information")

### Nextcloud android app version

3.35.0

### Nextcloud server version

32.0.5

### Using a reverse proxy?

No

### Android logs

I took a test photo, waited for a while and then searched the logcat output for relevant information. This is what I found. I hope it's useful since I'm not an expert in interpreting these logfiles.

[logcat_auto_upload.txt](https://github.com/user-attachments/files/24781924/logcat_auto_upload.txt)

### Server error logs

```bash

```

### Additional information

My custom ROM is ProjectMatrixx v11.2.5.
Auto upload worked more or less reliably until the latest update.
I also noticed that the list of previous uploads suddenly shows dates from December 1969 for all the uploaded files.
Might be the same issue as in https://github.com/nextcloud/android/issues/16333.