Use ENDF/B-VII.1 MC2-3 nuclide IDs

[aaronjamesreynolds]

What is the change?

Currently, ARMI returns MC2-3 nuclide IDs consistent with the ENDF/B-VII.0 library. This PR makes it so that:

• ENDF/B-VII.1 nuclides and MC2-3 IDs are added to mcc-nuclides.yaml,
• the default MC2-3 ID returned (e.g., when using getMcc3Id() or indexing the byMcc3Id dictionary) is consistent with ENDF/B-VII.1, and
• the VII.0 IDs are still accessible by means of getMcc3IdEndfVII0() or indexing the byMcc3IdEndfVII0 dictionary.

This paper provides a good overview of the differences between VII.0 and VII.1.

Tests have been updated or created to verify that getMcc3Id(), getMcc3IdEndfVII0(), and getMcc3IdEndfVII1() return the expected IDs. Additionally, two tests (test_compareDatabaseSim() and setUp() [for the cross section manager]) needed to be updated since vanadium is elemental in VII.0 and isotopic in VII.1.

Why is the change being made?

ENDF/B-VII.1 contains updated evaluations and entirely new evaluations compared to ENDF/B-VII.0. ANL has recently released VII.1-based MC2-3 libraries, so the most recent available data is the sensible default.

---

Checklist

• [X] This PR has only one purpose or idea.
• [X] Tests have been added/updated to verify any new/changed code.

• [X] The code style follows good practices.
• [X] The commit message(s) follow good practices.

• [X] The release notes have been updated if necessary.
• [X] The documentation is still up-to-date in the doc folder.
• [X] The dependencies are still up-to-date in pyproject.toml.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
1 out of 3 committers have signed the CLA.

:white_check_mark: john-science
:x: Aaron Reynolds
:x: aaronjamesreynolds

---

Aaron Reynolds seems not to be a GitHub user. You need a GitHub account to be able to sign the CLA. If you have already a GitHub account, please add the email address used for this commit to your account.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}