Downloaded Office files cannot be opened in Nextcloud Office

### ⚠️ 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. Download an Office file (doc/sheet/presentation) via ... > "Download". (aka "Set as available offline"). Let's call it test.ods.
2. Click on the test.ods to open it

### Expected behaviour

The file should open in Nextcloud Office/Collabora.
Or at least it should give me the option between Nextcloud Office and locally installed apps.

### Actual behaviour

The test.ods attempts to be opened with a locally installed app.
In my case, the two apps that are offered are Termux and a plaintext [Notes](https://f-droid.org/en/packages/org.billthefarmer.notes/) app.

Even if this is the expected behaviour - it is confusing to the user and there should be clearer guidance (= an option to choose).

### Android version

Android 13

### Device brand and model

OnePlus 5

### Stock or custom OS?

Custom (explain in "additional information")

### Nextcloud android app version

3.26.0

### Nextcloud server version

27.1.2

### Using a reverse proxy?

Yes

### Android logs

n/a

### Server error logs

```bash
n/a
```

### Additional information

As a workaround, I can delete the downloaded file (... > Delete > Local only). After that, the test.ods opens in Nextcloud Office again.