Properly support multiple tabs

### Steps to reproduce

1. I'm using an EMS-hosted element web 1.11.42
2. As usual, I opened a second tab to go to the element URL in order to handle a coding related manner while keeping an eye on an organizational space, and participating in a documentation-related discussion

### Outcome

#### What did you expect?

Second tab works, as it always used to – after all, having more than one window open is a very classical power-user workflow

#### What happened instead?


I got a message

> Element is open in another window. Click "Continue" to use Element here and disconnect the other window.

and that's more than annoying. This makes element worse to use than a significant part of the competition, which we decided against a while back.

### Operating system

Linux x86_64

### Browser information

FF 117.0.1

### URL for webapp

chat.gnuradio.org

### Application version

Element version: 1.11.42 Olm version: 3.2.14

### Homeserver

https://gnuradio.ems.host

### Will you send logs?

No