Aspect ratio of images in auto upload are distorted

### ⚠️ 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


Take several pictures with built-in camera and try to setup an auto upload.. the AR of the images are distorted
I could tell easily because the fonts are distorted

### Expected behaviour

Images should either be zoom to center or filled with vertical/horizontal gaps

### Actual behaviour

Images are distorted to fit the square

### Android version

Android 15

### Device brand and model

Pixel 8

### Stock or custom OS?

Stock

### Nextcloud android app version

20250114

### Nextcloud server version

30.0.4

### Using a reverse proxy?

Yes

### Android logs

_No response_

### Server error logs

```bash

```

### Additional information

_No response_