Currently, we set the the log component verbosities to the default , regardless of mongo binary version. However, the default mongod log component verbosity includes {sharding": {"migration": 2}}, which is not implemented on 4.2 binaries. This causes the node to fail.

We should add a separate default log component verbosity for last stable binary versions, and use that instead when needed.

This bug was exposed by the fix to SERVER-46332 and will need to be merged before that ticket is merged.