Large folder appears empty and does not load contents in app

### Steps to reproduce
1. Have a large folder on your nextcloud server (in my case 40Gb of data in Photos Folder, a few 1000 files)
2. Freshly connect Android app to the server
3. Open the large folder inside the app

### Expected behaviour
- shows the contained data
- at least indicates that viewing such a large folder may take time
- behaves as the "Photos" view does: lazy loads data with instant feedback
- does not shock the user by saying "hmm your folder is empty", when in fact it contains 40 Gigs of valuable data ;)

### Actual behaviour
- App says the photos folder is empty (while showing, that it is roughly 40 Gb in size)
- as a consequence it is not possible to view the content of the folder
- but when viewing photos with the "Photos" view everything shows up just fine

### Can you reproduce this problem on https://try.nextcloud.com?
- didn't try, but seems reasonable to assume that this is not setup related

### Environment data
Android version: 9

Device model:
Mi Note 10

Stock or customized system:
MIUI11

Nextcloud app version:
3.11.1

Nextcloud server version:
18.0.4snap3

Reverse proxy:

### Logs
#### Web server error log
```
Insert your webserver log here
```

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