Reimplement `Archetype::try_to_arrow` in terms of `as_component_batches`

- Source: https://github.com/rerun-io/rerun/pull/3363#discussion_r1331200579
> Now that we have `as_component_batches`, can't `try_to_arrow` just call `self.as_component_batches` and then call `try_to_arrow()` on each component batch? A lot less code needs generating. I guess we get an additional `dyn` call per component, but that seems worth it

