When no audio/video devices in the system are present, starting a call takes 2 minutes

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Steps to reproduce

1. Run on computer with no mic/webcam
2. start a conversation and click on start conference
3. in the device selection screen you will see none for video and audio input,
4. hitting the start conference button underneeth will freeze the ui for 2 minutes and after that "error accessing camera and mic"
5. After those 2 minutes the conference starts and you can finally share your screen

Actual behaviour

Even more, in program settings, when using "check/verify devices" after the device menu is closed, the ui freezes for 2 minutes and after that "error accessing camera and mic"
This happens both in talk app but also in chrome and firefox on same actions.

Talk app

2.1.1
Talk app version: (see apps administration page: /index.php/settings/apps)
22.0.10
Custom Signaling server configured: yes/no and version (see Talk administration settings: /index.php/settings/admin/talk#signaling_server)
yes and shown as working in admin panel

Custom TURN server configured: yes/no (see Talk administration settings: /index.php/settings/admin/talk#turn_server)
yes and shown as working in admin panel

Custom STUN server configured: yes/no (see Talk administration settings: /index.php/settings/admin/talk#stun_server)
yes and shown as working in admin panel

Browser

test both : latest firefox and chrome

Microphone available: no

Camera available: no

Operating system: Windows

Browser name: Firefox/Chrome/Safari/...

Browser version: 124/125/...

Browser log

Server configuration

Operating system: Ubuntu/RedHat/...
Ubuntu snap
Web server: Apache/Nginx

Database: MySQL/Maria/SQLite/PostgreSQL

PHP version: 8.1/8.2/8.3

Nextcloud Version: (see administration page)

List of activated apps:

If you have access to your command line run e.g.:
sudo -u www-data php occ app:list
from within your server installation folder

Nextcloud configuration:

If you have access to your command line run e.g.:
sudo -u www-data php occ config:list system
from within your Nextcloud installation folder

Server log (data/nextcloud.log)

Insert your server log here

Start by reproducing the call and “check/verify devices” flows on a Windows system without a microphone or camera, while collecting the browser console and network logs requested in the issue. Trace the Talk app’s device-selection and conference-start paths, including the configured signaling, TURN, and STUN services. Done means both flows avoid the two-minute UI freeze, report the missing devices promptly, and still allow screen sharing.