CDRIVER-4718 store `recoveryToken` for Load Balanced topology (#1417)

* add regression test

* format mongoc-cluster.c

* store recoveryToken for loadBalanced topology

* make `_in_sharded_txn` static

* use `static`

Co-authored-by: Kyle Kloberdanz <kyle.kloberdanz@mongodb.com>

* removing redundant calls to `_mongoc_topology_get_type`

Co-authored-by: Kyle Kloberdanz <kyle.kloberdanz@mongodb.com>