Opening an issue to track this [TODO](https://github.com/quickwit-oss/chitchat/blob/3ef1abcd41f9df7e2dc214e0e4f4b0f719f98505/chitchat/src/state.rs#L43). I'm not sure how you can optimize `iter_stale_key_values` with the max version... If `floor_version` is greater or equal to `max_version`, you don't have to iterate over all values.
