App ignores proxy configured in WLAN profile, tries direct connect

### ⚠️ 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. Configure a WLAN profile with a proxy
2. Upload a file from the mobile phone to the nextcloud instance
3. App tries direct connection to cloud ignoring the configured proxy

### Expected behaviour

I would expect, that the App **does** respect the WLAN configuration.

### Actual behaviour

App tries direct connection to cloud ignoring the configured proxy. The proxy is neither running on the phone nor at the cloud installation, but in the local network. So the app does not work in typically company networks, which require to use the proxy to connect to the internet.

### Android version

AOSP 14

### Device brand and model

AC2003

### Stock or custom OS?

Custom (explain in "additional information")

### Nextcloud android app version

3.31.0

### Nextcloud server version

31.0.2

### Using a reverse proxy?

No

### Android logs

none

### Server error logs

```bash
none
```

### Additional information

LOS21

I can provide firewall logs from the network if it's of any use.