SERVER-81974 relaxed direct connection verifications in sharded clusters to allow them once the cluster is shrinking. This was done thinking that the replica set endpoint project would be on time, however, now that collections will be tracked lazily on moveCollection calls, we can't allow direct connections once the cluster grows and then shrinks, because any DDL performed in direct connections will leave inconsistent metadata in the CSRS.

The purpose of this ticket is to prevent direct connections after the cluster grows.