You could probably rig something up to periodically check RAM usage and if it's dangerously high, send a system notification - or make an xmessage popup - to tell you to restart Brave ASAP. That is, before the death loop begins in the first place.
You might also want to install an extension that unloads tabs that haven't been accessed in a while, especially if you're a tab hoarder.
I don't use Brave, so I'm making assumptions that such an extension exists and that Brave can be restarted without losing all tabs, etc.