This is unlikely to happen.
As you wrote, V8 primarily targets Chromium's needs, and those bring enough challenge and complexity. V8 isn't designed for AOT compilation, we think building such support would likely be a lot of effort, and we have no plans to spend any time on it.
We're entirely fine with it when other JS engines specialize for different (non-browser) use cases. The world is a large place and has room for many engines in it :-)