E2EE mnemonic phrase not recognized in 3.30.7 - netxcloud hub 29.0.9 - "Error while decrypting. Wrong password?"

### ⚠️ 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. configure server-side encryption (Hetzner SAAS) using defaul encryption module. No home encryption
2. configure E2EE from linux nextcloud client Appimage 3.15.3
3. store mnemonic phrase
4. create and encrypt from linux client
5. install latest android client from f-droid 3.30.7
6. grant access to android client
7. go to settings and try to save mnemonic phrase

### Expected behaviour

it should sync keys and accept mnemonic phrase

### Actual behaviour

it syncs keys and it fails saying "Error while decrypting. Wrong password?"

### Android version

15

### Device brand and model

google pixel 7

### Stock or custom OS?

Custom (explain in "additional information")

### Nextcloud android app version

3.30.7

### Nextcloud server version

29.0.9

### Using a reverse proxy?

No

### Android logs

_No response_

### Server error logs

```bash

```

### Additional information

android 15 on graphene os - no storage limitations - application installed in "work profile"