3.30.6 - Missing permission "all files access"

### ⚠️ 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. Install version 3.30.6
2. Press the upload button inside the Nextcloud app
3. Navigate into a folder with files other than pictures or videos
4. Result: there are no other files listed

### Expected behaviour

It should be possible to upload files other than pictures and videos.

### Actual behaviour

The error is caused by the missing permission "all files access".
It was possible in previous versions.

### Android version

15

### Device brand and model

Google Pixel 8

### Stock or custom OS?

Custom (explain in "additional information")

### Nextcloud android app version

3.30.6

### Nextcloud server version

30.0.2

### Using a reverse proxy?

Yes

### Android logs

_No response_

### Server error logs

```bash

```

### Additional information

My phone is running GrapheneOS.