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Issue description

In RH134, after running the command `systemctl enable cockpit --now` in servera, we should be able to access the cockpit web page. But now the web page displayed an error: 

This web browser is too old to run the Web Console (missing selector(:is():where()))
I have reproduced this issue in my own lab, and I'm using the latest version of Google Chrome. Same issue still exists if I switch to FireFox. 
The version of my Google Chromeis: 120.0.6099.225
 
Steps to reproduce:

1. start a RH134 lab environment
2. login into workstation VM
3. SSH into servera
4. execute `systemctl enable cockpit --now`
5. Click on the cockpit link displayed in the lab control page
   

Workaround:

Access the cockpit inside the workstation VM

Expected result:

Cockpit can be opened and the login window can be shown.