We are currently dropping the `ns` parameter from handleTemporarilyUnavailableExceptionInTransaction . We should just remove that parameter altogether.

The handleTemporarilyUnavailableException passes a `StringData ns` (which is coming from a serialized NamespaceString) to then be deserialize for logging (here too). We should just pass the NamespaceString directly and only deserialize once for logging.

logWriteConflictAndBackoff should also pass a NamespaceString directly. We are currently serializing a NamespaceString as a parameter which is then used to deserialize the just serialized NamespaceString.