Conflict resolver dialog cannot be created

### ⚠️ 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. Create a file upload conflict situation. These are fairly easy to set up - you don't even have to touch the file on the nextcloud side. In my case, the file was likely modified on the Android side during the upload.
2. Expand the "File upload conflict notification".
3. Click "Resolve conflict".
4. Instead of the conflict resolver dialog, I just get a toast that says "Conflict resolver dialog cannot be created".

I used to get the conflict resolver until fairly recently.

### Expected behaviour

Conflict resolver should open

### Actual behaviour

Toast that says "Conflict resolver dialog cannot be created".

### Android version

15 (BP1A.250405.007.B1)

### Device brand and model

Pixel 7

### Stock or custom OS?

Stock

### Nextcloud android app version

3.31.1

### Nextcloud server version

31.0.4

### Using a reverse proxy?

I don't know

### Android logs

Todo

### Server error logs

```bash

```

### Additional information

_No response_