modification of status message after selecting a predefined status is ignored

### Steps to reproduce
1. select a predefined status
2. modify the status message or the icon
3. click "set status" button

### Expected behaviour
- modified status message and icon is set

### Actual behaviour
- predefined status is set, modifications are lost

### Environment data
Nextcloud app version: 3.19.0

## solution?
just don't use the api for predefined status. a click on a predefined status just fills the fields that then can be modified..

see commit for android talk: https://github.com/nextcloud/talk-android/pull/1668/commits/b3b03e846bd58f37f519d459719a7f22e82db7e6