[SERVER] Speed up the reindex process with remove refresh_interval

[dbeast-co]

Reindex to the index with default refresh_interval (null) could speedup reindex speed and decrease CPU usage.
Could be implemented as automation for the following steps:

1. Start reindex
2. Check the refresh_interval in the destintaion index settings
3. If refresh_interval exists -> set refresh_interval to null
4. After the end of the proccess return the refresh_interval to original value