Auto-upload to end-to-end encrypted folder not 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

Go to Settings -> Auto-Upload -> (choose some folder) -> Configure -> (enable) -> Remote Folder.

Then Choose an end to end encrypted folder.

### Expected behaviour

The folder is choosable, or at least there is some information about what can be expected to work with end-to-end encryption.

### Actual behaviour

Toast message saying "Copy/move into encrypted folder currently not supported".

---

Scanning through older bug reports I get the impression that auto-upload to end-to-end encrypted folders used to work at some point. See [10583](https://github.com/nextcloud/android/issues/10583) for example.
Also the error message seems weird, as it is talking about "copy/move".
Looking through the code a bit I suspect that perhaps a folder chooser component was reused for choosing the target folder for auto-upload and that folder chooser component has different expectations about what it will be used for and how that interacts with end-to-end encryption, than what is currently true. Hence the weird error message. Only a guess though.

### Android version

10

### Device brand and model

Moto G7 power

### Stock or custom OS?

Stock

### Nextcloud android app version

3.31.0

### Nextcloud server version

30.0.6

### Using a reverse proxy?

I don't know

### Android logs

_No response_

### Server error logs

```bash

```

### Additional information

_No response_