Failed to retrieve file information due to User-Agent

[HiSkyZen]

Describe the bug
The app is extremely sensitive to User-Agent, so it fails to retrieve file information, especially in a mobile environment, and returns an incorrect value for getWopiUrl.

It appears to work fine on Android Chrome and Firefox UA. (The same results occur on real devices.)

To Reproduce

1. Install and Set-up app
2. Open OOXML file (docx, pptx, etc.) with Samsung Internet on Android

or

1. Install and Set-up app
2. Open OOXML file with Samsung Internet UA (below) (using User-Agent Switcher or DevTools at a Desktop)
   Samsung Internet UA Example
   Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/25.0 Chrome/121.0.0.0 Mobile Safari/537.36

Expected behavior
The Office Online Viewer (Mobile UI) is displayed.

Screenshots

In order from top: Edge, Samsung Internet, Chrome, Firefox, iOS Safari

Client details:

• OS: Android, iOS
• Browser: Samsung Internet, Edge (Android), Safari
• Version: 25, 126, iOS 17.3.1
• Device: Galaxy S23 Ultra, iPhone SE (2nd Gen)

Server details

Operating system:
Ubuntu 20.04
Web server:
nginx 1.27.0
Database:
Percona Server 8
PHP version:
PHP-FPM 8.3
Nextcloud version:
28.0.6
Version of the officeonline app
4.2.1
Version of Office Online server
2019 with KB5002503 Installed (Latest)

Logs

Nextcloud log (data/nextcloud.log)

no related logs

Browser log

Waiting for page to render…
[getWopiUrl] https://mydomain.net/index.php/apps/officeonline/wopi/files/undefined
POST https://mydomain.net/apps/officeonline/undefinedWOPISrc=https%3A%2F%2Fmydomain.net%2Findex.php%2Fapps%2Fofficeonline%2Fwopi%2Ffiles%2Fundefined&title=undefined&lang=ko&closebutton=1&revisionhistory=1 404 (Not Found)
ko.js?v=969c7508-70:1  Uncaught ReferenceError: OC is not defined
    at ko.js?v=969c7508-70:1:1
(Anonymous) @ ko.js?v=969c7508-70:1
user.js:26  Uncaught ReferenceError: t is not defined
    at user.js:26:19
    at user.js:37:17
    at user.js:37:17
(Anonymous) @ user.js:26
(Anonymous) @ user.js:37
(Anonymous) @ user.js:37
SideMenu.js:26  Uncaught ReferenceError: OC is not defined
    at SideMenu.js:26:20
    at SideMenu.js:71:1
    at SideMenu.js:71:1
(Anonymous) @ SideMenu.js:26
(Anonymous) @ SideMenu.js:71
(Anonymous) @ SideMenu.js:71
script?v=28:3  Uncaught ReferenceError: SMcreateElement is not defined
    at script?v=28:3:29
    at script?v=28:111:3