Will only sync offline file when navigating to folder when no internet connection after edit

### Actual behaviour
Offline file will not synchronise until you navigate to the folder in the nextcloud app containing that file with the network connected (even if the accounts > nextcloud > files is set to on)

### Expected behaviour
Updated files should synchronise as soon as network connection is established, rather than requiring navigation to the folder.

### Steps to reproduce
1. Mark a file as offline with wifi enabled
2. turn off wifi
3. edit file and save it
4. close nextcloud client
5. enable wifi
6. wait - sync will not occur
7. navigate to folder containing offline file and it will upload

### Environment data
Android version:
6.0.1

Device model:
Blackberry priv

Stock or customized system:
Stock

Nextcloud app version:
1.4.3

Nextcloud server version:
12.0.0

(No apparent log errors)