It seems getKeys() may throw an exception, as seen in validate command output (ex. SERVER-84114). We should wrap any getKeys() calls in a try/catch and log a healthlog entry with detailed information regarding the record / keystring that failed the call.

In addition, we should ensure that dbCheck continues with the rest of the batch if an exception is thrown. This may result in a hash mismatch for the node with the inconsistency, which is fine as this is similar behavior to how dbCheck handles corrupt BSON.