Unit Definition fixes

[andrewgsavage]

@acottuli

How are you finding these? Are you using QUDT?
Ideally we'd like to add other information like the reference to be accessible within pint, which the toml format should allow

Originally posted by @andrewgsavage in #2217 (comment)

[acottuli]

@andrewgsavage No not using QUDT. I found a couple by manually reviewing the units and constants file and a few more by asking an LLM (ChatGPT 5 in "Thinking" mode) to review the files for any errors.

It's not always accurate, but it at least provided some potential issues which I then reviewed manually.