Sharing with send copy to doesn't work

### ⚠️ 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. Pick a file to share
2. Tap the share button
3. Tap send copy to
4. Select the app tho share the file to (Telegram)

### Expected behaviour

I should be able to share the file without problems

### Actual behaviour

A message appears with the text Unsupported content

### Android version

16

### Device brand and model

Oneplus 8T

### Stock or custom OS?

Custom (explain in "additional information")

### Nextcloud android app version

34.1.1

### Nextcloud server version

33.0.8

### Using a reverse proxy?

No

### Android logs

_No response_

### Server error logs

```bash

```

### Additional information

The problem happens not only on Telegram but also on Whatsapp. To succesfully share the file I have to attach the file to the conversation using Android Storage Access Framework file picker

Start with the Android share flow reached through “Send copy to” and reproduce the issue using Telegram or WhatsApp on the reported app and Android versions. Trace the share path from the reproduction steps and verify that the selected app receives the file instead of showing “Unsupported content”.

Written by the indexing model from the issue text.