AutoUpload not working for AlpineQuest gpx 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

I use AlpineQuest as a hiking app. It allows me to save my trackdata which I can then export to gpx format. The export process puts the created gpx file in : Android\media\psyberia.alpinequest.full\AlpineQuest Placemarks\Exported placemarks. The created file is named as in the following example "track_20250619_083238_2025_06_19.gpx".
I setup the AutoUpload to push the above directory to a NextCloud folder which I've called "30_Maps_&_Tracks\Randos". The newly exported gpx file shows up in the AutoUpload overview but the file never shows up in the file list.

### Expected behaviour

I would expect the gpx files to be uploaded

### Actual behaviour

gpx files are not uploaded

### Android version

14 UKQ1

### Device brand and model

Xiaomi 5G Plus (Model 2201122G)

### Stock or custom OS?

Stock

### Nextcloud android app version

3.32.0 RC1

### Nextcloud server version

31.0.6

### Using a reverse proxy?

No

### Android logs

Cannoit find anyfile named nextcloud.log on my Android device
After thoughts :
- Could this be due to the "&" character in the nc destination folder.
- Could this be due to the very long path name for thegpx folder name or the length of the gpx file.

### Server error logs

```bash

```

### Additional information

Note that Android and NextCloud versions used are French