AutoUpload not working, battery optimization bug

### Actual behaviour
- When I want to enable auto upload feature is displayed info to disable battery optimization for NextCloud app, but this function is disabled, and sync not working.

### Expected behaviour
- Auto upload should works.

### Environment data
Android version:
Android 9
Device model:
Xiaomi Mi A2 Lite
Stock or customized system:
Lineage OS 16
Nextcloud app version:
3.9.0 & dev 20191102
Nextcloud server version:
16.0.3
### Logs
#### Web server error log
```
Insert your webserver log here
```

#### Nextcloud log (data/nextcloud.log)
```
Insert your Nextcloud log here
```