element-desktop opens external browser to sign out of sessions

### Steps to reproduce

Go to _All settings_ -> _Sessions_
scroll down to "Other sessions"
pick one of the sessions and click on "Manage this session"

### Outcome

#### What did you expect?
I expected to be presented with the option to sign out of the session

#### What happened instead?
My web browser opened and took me to https://account.matrix.org/account/?action=org.matrix.session_view&device_id={device_id}

Why is this bad?
- I don't want my web-browsing activity associated with my Matrix account - that includes recording details about my browser alongside my matrix device id in server logs. I expect all functionality related to my Matrix account to be available within the app. Considering the desktop app is electron this expectation seems on its face to be pretty reasonable.
- the "Manage this session" link does not indicate that it will open externally. By contrast, the button at _All settings_ -> _Account_ -> "Manage account" at least has an icon that indicates it will open externally. The "Manage this session" link gives no such indication, so users have no reason to expect that clicking it will open an external browser.

### Operating system

Linux: Debian 13

### Application version

Element version: 1.12.3 Crypto version: Rust SDK 0.14.0 (c3b7918), Vodozemac 0.9.0

### How did you install the app?

apt repo: https://packages.element.io/debian/

### Homeserver

matrix.org

### Will you send logs?

No