At the moment, wt dump doesn't print keys and values with multiple components in a readable way since it just dumps them as strings.

Relevant code here: https://github.com/wiredtiger/wiredtiger/blob/develop/src/utilities/util_dump.c#L599

I think all we need to do is use a smarter helper that understands the key/value format like __wt_key_string (or one of the helpers that it calls).