Upload and Delete from device 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

In the past when I wanted to upload files to a location/folder in the nextcloud app there was a small preliminary menu where we could choose the behavior. One of them was "delete from device" which would delete the file from my Android device after they were successfully uploaded to Nextcloud.

This feature has disappeared since a couple months which was frustrating because I used it 2-3 times a week.
Most of the time once I upload something to Nextcloud I don't want to keep a local copy.

I think it might be because nextcloud switched to the system file picker whereas it used its own menu before. Selecting files also has become more cumbersome since the system file picker is trash.

### Expected behaviour

I should be able to define the behavior before selecting files that will delete files after the upload.

### Actual behaviour

It goes straight to the system file picker. After selecting a few files and doing the upload I noticed that the files are correctly uploaded but a copy is still on my device. I then have to manually go delete them which with hundred of files is quite complicated and I often don't remember all the files I uploaded.

### Android version

10 QKQ 1.190825.002

### Device brand and model

Mi 9T pro

### Stock or custom OS?

Stock

### Nextcloud android app version

3.31.1

### Nextcloud server version

28.0.4

### Using a reverse proxy?

Yes

### Android logs

_No response_

### Server error logs

```bash

```

### Additional information

_No response_