Infinite scroll creates duplicate records

**Issue Type:**
Bug

**Platform:**
Web

**Description:**
When using infinite scroll, if you scroll down past the first page or so it shows new results but loads duplicate hits. It appears the duplicates are the last hit of the previous "page". In addition to showing duplicates, it also throws a React error:

Warning: Encountered two children with the same key, `{id}`. Keys should be unique so that
components maintain their identity across updates. Non-unique keys may cause children to be
duplicated and/or omitted — the behavior is unsupported and could change in a future version.

**Screenshots:**
[Video demo of issue](https://champs.hippovideo.io/video/play/EX5wnpY5-TKfJ_wg5SgC66fD-V2Ds4-EsR0dLQ7eU3o)

**Reactivesearch version:** x.y.z
3.0.0-beta.10

**Browser:**
All