Nextcloud Upload photos or videos modal not accessible to VoiceOver #3069

Steps to reproduce

1. Turn on VoiceOver (iOS Screen Reader)
2. Open Nextcloud, click + button in the tab bar, Click "Upload photos or videos"
3. A custom modal will pop up with the gird view of Camera Roll. VoiceOver is not able to select photos or videos from this screen

Expected behaviour

VoiceOver should be able to select and de-select photos and videos to upload.

Actual behaviour

VoiceOver doesn't focus on the photo grid area.

Screenshots

Logs

N/A

Reasoning or why should it be changed/implemented?

It is not accessible for screen readers to choose photos or videos to Nextcloud.

Environment data

iOS version: iOS 18.0

Nextcloud iOS app version: Nextcloud Hydropgen for iOS 5.5.5.0 @ 2024

Server operating system: Linux 4.18.0-513.9.1.lve.el8.x86_64 x86_64

Web server: Apache

Database: MySQL 10.6.19

PHP version: 8.1.29

Nextcloud version: Nextcloud Hub 9 (30.0.0)