Multiple uploads not possible (or consistent) from other apps

### ⚠️ 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

**ENVIRONMENT**
- Device: Huawei P30 PRO
- OS: EMUI (Android)
- EMUI Version: 12.0.0.139 (C431E3R2P2)
- Mainline software update: 2022-10-01 Q
- Baseband version: 21C20B392S000C000
- Kernel version: 4.14.116
- Security patch level: 1 August 2022

STEPS TO REPRODUCE THE ISSUE
- Open "Photos" gallery
- Select multiple photos (at least 2)
- Click on the "Share" icon. A popup with a number of sharing apps appears
- Select blue coloured "Nextcloud" icon
- Click on the "Upload" button
- Nothing happens and the user is not informed with a popup or something similar about the progress of the upload unless he opens the "upload" notification. However once there only one file is sent for upload. So if you have to send 20 files for upload you have to repeat this process 20 times (unbelievable)
- After that the user gets redirected to the "Photos" app where he can still see his selected files "ready" to be uploaded. In such a case assuming that the user's attention is taken by something else (that happens to everyone), as he doesn't get any notification he won't know whether his files have been sent for upload. As indicated in previous point he has to go to the upload progress notification to check it

In other words it's not intuitive at all

ATTACHMENTS
- bugreport.png


### Expected behaviour

1. All selected files should be uploaded in bulk (all together) and not one by one
2. A clear notification to the user should be sent letting him know that the upload is started at least

### Actual behaviour

1. The user selects at least 2 files but only one file at a time can be uploaded. Imagine if he select 20, 30 or even more files
2. The user doesn't get clearly informed about the fact that the upload has started

### Android version

12

### Device brand and model

Huawei P30 PRO

### Stock or custom OS?

Stock

### Nextcloud android app version

3.22.2

### Nextcloud server version

24.0.6

### Using a reverse proxy?

No

### Android logs

Not applicable

### Server error logs

```bash
Not applicable
```

### Additional information

Couldn't find anything in storage/emulated/data/nextcloud.log.