Da Risk <da_risk@geekorum.com> [Tue, 07 May 2024 01:27:51 -0400] rev 74
geekdroid-firebase: allow to validate QueryPagingSource boundary key
This is useful when ordering by @ServerTimestamp field. When the document
hasn't been sent to server it can't be used as a boundary key has the server
timestamp is null. This change allows client to make the check and avoid an
IllegalArgumentException.