can you change this so it does something like:

Global.showToastNotification(
    VenusOS.Notification_Info,
    BackendConnection.isVrm
        //% "Closing due to security protocol change, you will need to relaunch remote console via VRM"
        ? qsTrId("access_and_security_closing_remote_console")
        //% "Page will automatically reload in 5 seconds"
        : qsTrId("access_and_security_page_will_reload"),
    3000)

Actually, now I wonder ... do we actually need to reload the page, for VRM connections?

Honestly, I think we can just add a check like: "if (!isVrm()) return;" at the start of BackendConnection::securityProtocolChanged(), as I don't think we need to reload the page if we are connected to VRM (rather than to the cerbo's web server directly). See for example the similar check in BackendConnection::onNetworkConfigChanged().

Then, I think here in this code, we should just raise the toast notification you originally had, but ONLY if we are NOT connected via VRM. e.g.: add a condition && !BackendConnection.isVrm to the if statement above.